Investigation into the Effect of Concentration on Rate of Reaction between Marble Chips and Acid Essays

Investigation into the Effect of Concentration on Rate of Reaction between Marble Chips and Acid Essays Investigation into the Effect of Concentration on Rate of Reaction between Marble Chips and Acid Essay Investigation into the Effect of Concentration on Rate of Reaction between Marble Chips and Acid Essay Before carrying out a set of experiments, I decided to do preliminary work to look at quantities and measurements, in order for my experiments to work smoothly and accurately. To do this, I tested both amounts of marble chips and amounts and concentration ranges of acid. I also experimented with different measuring cylinder sizes. I carried out a few simple experiments varying the above, and came up with the most sensible.We began by what seemed the most practical quantities. Firstly we looked at marble chips. We took 5g as a starting example. To accompany this we looked at what would be a sensible amount of liquid to accompany it and chose 50ml. To find the right measuring cylinder to use, we set up a mock experiment and began with a 25ml measuring cylinder. We timed experiments for both the strongest and weakest concentrations of acid and recorded the following results.50ml acid0ml water = 26.80 seconds10ml acid40ml water = 2 minutes, 53.77 secondsThese were both practical results and so we were happy with the size of the measuring cylinder. Along with this, we also took note at how our quantities of acid and marble chips worked together and saw that they were both satisfactory. All other equipment and the set up of the apparatus were also fine and so we decided to move on to the proper experiments.Planning My WorkFor this experiment I will need to investigate how the rate of reaction of marble chips is effected by acid as well as considering other factors that my have an effect.Aim: To find a relationship between the concentration of acid and the rate of which a reaction takes place with marble chips.To begin the experiment, I need to look at the chemistry of marble chips (calcium carbonate) and acid and so I will begin with their equations.Word equation:calcium carbonate + hydrochloric acid calcium chloride + water + carbon dioxideChemical equation:CaCo3(s) + 2HCl(aq) CaCl2(aq) + H2O(l) + CO2(g)When the reaction takes place, carbon dioxide, water and salt will be produced. Out of these three, I have chosen carbon dioxide as the one to measure for my rate of reaction. This is because it will be the easiest and most noticeable to collect. By the measurement of the carbon dioxide, we will be able to accurately follow how fast the reaction occurs. Pg 190 of the Chemistry for you book, shows a sensible, simple and accurate way of measuring a gas like carbon dioxide, in an upturned measuring cylinder filled with water. If we place marble chips and acid in a conical flask, the gas will bubble through a delivery tube lowering the level of water, which we will then be able to time until all water has left the cylinder.The amount of time it takes for the gas to fill the measuring cylinder will show us how much carbon dioxide has been given off and so will show us the rate of reaction. Rate of reaction is altered by three main things. One is SURFACE AREA. This will relate to the surface area of our marble chips. The finer the chips, the larger the surface area, and so the larger the rate of reaction. However, we are intending to keep the surface area the same. Another factor is TEMPERATURE. Again, we are not going to alter the temperature. If we were to, the hotter the temperature, the faster the rate of reaction as the molecules would have more energy. The other is CONCENTRATION. This relates to the concentration of the acid and is what we will use as our variable.The acid particles can only react with the marble chips when they collide, as seen in the diagrams.The acid particles move randomly through the water. As you increase the concentration of the acid, there are more acid particles in the same volume. Therefore there is a greater chance of acid particles colliding, and reacting, with particles on the surface of the marble and you increase the rate of reaction.This is what I will use in my experiment. The concentration of acid is written in Molars. For example, 1M (molar) is half the concentration of 2M. I will alt er the concentration to see what effect it has on the rate of reaction.Predictions:I predict that when investigation the effect of concentration on rate of reaction between marble chips and acid, that an alteration in concentration will effect the rate of reaction in a pattern. As has already been explained, as you increase the concentration of the acid, there are more acid particles in the same volume and so therefore there is a greater chance of acid particles colliding, and reacting, with particles on the surface of the marble. Because of this, I will make the prediction that the higher the concentration of acid, the faster the rate of reaction with the marble chips and the faster my measuring cylinder will fill with carbon dioxide.I also predict a more detailed pattern. I predict that the level of concentration may also have a direct effect on the rate of reaction. E.g. that if a 2M was compared with a 1M acid which is half the concentration, the rate of reaction will also be ha lf. I will now need to carry out my experiment to test these predictions.My ExperimentDiagram:Apparatus:Conical flask to hold the marble chips and acid for the experiment50ml measuring cylinder to measure the volume of acid being used in the experiment. I chose 50ml volume because that is the maximum acid we will need.Delivery tube and bung will transport C02 given offWeighing pot to hold the marble chips for weighing25ml measuring cylinder to collect the C02 given off by the experiment. I chose 25ml because it was the most sensible sizeBalance reading to 0.01g, must be accurate, to weigh the marble chipsWater trough to hold the water for the collection of C02Stop clock reading to 0.01 of a second, to accurately time the collection of C02 and the rate of the reactionMethod:Each time the variable is altered, I shall carry out exactly the same experiment, merely with a different concentration.* I will begin by collecting and setting up all my equipment. I need to make sure tha t the chonical flask is clean and doesnt have any substances already in it. The 25ml measuring cylinder needs to be filled with water. We found that if we filled a 25ml measuring cylinder, due to excess volume above the measurements, it actually held a total of 40ml. We found this by completely filling the cylinder as we would in the experiment, and then pouring this into a larger measuring cylinder and taking the reading. The cylinder then needs to be stood upside down in the trough that also needs to have an ample amount of water in. The delivery tube needs to be under the cylinder but does not yet need to have the bung in the flask.* The marble chips then need to be weighed accurately, remembering to take into account the surface area. These can then be put into the flask.* I will then prepare my acid to the right concentration. The amount of acid needs to be measured accurately in the separate, 50ml measuring cylinder and then water needs to be added, if required, to dilute the acid to the right concentration.* The acid can then be added to the flask and marble chips. The bung needs to be put in the flask immediately, and as soon as this is done I will begin the stop clock.* I will then watch the flask carefully and as soon as the first bubble comes out of the measuring cylinder, will stop the stop clock and take my reading.This will be carried out for each experiment. In-between, it is important to rinse and dry the chonical flask and to refill the 25ml measuring cylinder.After obtaining a complete set of results, I will then go through the process again to repeat my experiments. This will give me added information and will help explain anything out of place if necessary.Concentrations and Readings:I am going to carryout five experiments, and then repeat these to give me a total of 10 results, two for each experiment. The experiments I will carry out will be of five different concentrations of acid. Along with the concentrations in ml of both acid and wat er, I have written along with it the concentrations in molar (M). (Our original strength of acid is 2M) The concentrations will be:Acid (ml)Water (ml)CalculationMolar (M)5002 x 5/5 = M240102 x 4/5 = M1.630202 x 3/5 = M1.220102 x 2/5 = M0.810402 x 1/5 = M0.4We see that in this experiment, 2M will be the strongest acid, 0.4 will be the weakest. The way that the amount of ml is always equal to 50ml means though the concentrations change, the volume of liquid will be kept the same.Fair Test:It is very important to make my experiment fair. If it is not kept exact, then my results may easily be altered by slight differences that shouldnt occur.In order to keep my experiment fair, I will ensure that there is only one variable at any time. My variable will be the concentration of acid to water. Other possible variables such as the amount of liquid, temperature, amount of marble chips or surface area of marble chips should never change and should always stay the same. To do this, we will kee p the volume of liquid the same by measuring accurately in an accurate measuring cylinder. The amount of marble chips will be kept same by weighing them on accurate weighing scales. The surface area of the chips will be harder to keep accurate. We can do this generally by attempting to keep the marble chips of similar sizes as accurately as possible. I have decided to use small marble chips rather than large so that the surface areas are more similar. However, this may not always be completely accurate, and so we will have to take this into account and remember this when looking at results. We will monitor temperature with a thermometer, but will work to room temperature. We will not be able to alter the temperature as we please, and so will take a note of the temperatures for each experiment so that we can explain any changes of patterns in our results.It is also important not to change apparatus or equipment and to keep the experiment exactly the same.If this is kept to then my ex periment will be fair, hopefully giving me the most accurate results as possible.Safe Test:Keeping a safe test is also very important for the safety of me and other people around me. To ensure that my experiment is safe, I will carry out the following precautions.* Goggles should be warn to protect my eyes from acid or in case another accident occurred* I should act in a sensible and safe manner, carefully working with the equipment and being aware of any dangers.* The low concentration of acid I will use is a safety precaution to ensure that the acid is not dangerous.Obtaining My EvidenceTo obtain my evidence, I began by setting up my equipment and following the plan previously written. I measured hydrochloric acid (HCl) with water to produce the 50ml volume of the desired concentration, and added to this, 5g of small marble chips. I timed, in seconds, how long this took to produce a 45ml3 of gas by bubbling it through a delivery tube into an upturned mea-suring cylinder of water. The volume of which was 45ml. (All this is explained in more detailed in my plan). I included certain apparatus for accuracy. The reaction was timed accurately by using a stop clock measuring to 100th of a second. The scales measured the marble accurately by measuring exact to 0.01g. This accuracy of this was also improved by using small marble chips with more similar surface areas. The measuring cylinders used all measured to 0.1ml.From carrying out this process, I produced a set of results for 5 concentrations of acid, 2M, 1.6M, 1.2M, 0.8M and 0.4M. I then repeated these results for even more accuracy so that I will be able to produce an average.Results:The results for both the first set of experiments and the repeated, second set of experiments have been combined into one table. The column of Concentration, is measured in Molars (M). This is the volume of hydrochloric acid (HCl) and water (both measured in cm3) shown together. Time 1 and Time 2 are the times (in seconds) for expe riment 1, and the repeats, experiment 2.Other information that I also took, was a note of the room temperature at the time of taking the results. The results of experiment 1 and experiment two were taken on different days and so this was important information. I already know that temperature is an altering factor in rate of reaction and so if the temperature if not the same then it is important to know so that a change in results can be explained.Experiment 1 temperature 200CExperiment 2 temperature 190CThe first lots of experiments were taken at a temperature 10C higher than the second lot of experiments. This needs to be known to explain any patterns that may be related.Table of My Results:HCl (cm3)Water (cm3)Concentration (Molar)Time 1 (seconds)Time 2 (seconds)500213.0113.0740101.617.2713.3030201.227.3022.5120300.844.3732.4910400.4215.12186.22Analysing My Evidence and Drawing ConclusionsFrom my table of results, I can calculate additional information. I can work out an average ti me by adding the two existing times and dividing them by two. I can then find a rate of each reaction by dividing 1 by the average time. This will give me another pattern to follow by showing me how fast the reaction went at the different concentrations. The formulas for these are:Average = time + time / 2Reaction = 1 / timeI am going to add the answers of these as additional columns onto my table.HCl (cm3)Water (cm3)Concentration (Molar)Time 1 (seconds)Time 2 (seconds)Average Time (seconds)Rate500213.0113.0713.040.76740101.617.2713.3015.290.06530201.227.3022.5125.310.0420300.844.3732.4938.430.02610400.4215.12186.22200.670.005From the table, without the average time, we can see a common difference between the time in experiment one and the time in experiment two. All results for experiment 1 are slightly quicker than the times for experiment two (with exception of the 2M experiment). We can relate this back to the temperature difference. Temperature affects the rate of reaction. Whe n particles are heated up, they have more energy. They move around more quickly. As they travel faster, there are more collisions in a certain time. As well as this, with more energy, more collisions are likely to result in a reaction. Therefore, as temperatures are raised, reactions get faster and more likely, increasing the rate of reaction.I noted when obtaining my results how the room temperature at the time experiment 1 was being carried out was 200C, where as experiment 2 was at 190C. This means that experiment 1, having the higher temperature, would have shown a faster rate of reaction, which is exactly what is shown in the table.This is apart from the reading for the highest concentration, the 2M experiment. Here we see that the time in experiment 2 is faster than that in experiemnt1. However, this is by 0.06 of a second. Here human reaction time may be a factor. Although the stop clocks are very accurate, they will never be exact, as it is very hard to stop the clock exactl y at the time you want it to. This error may have led to this small difference. By noticing this here, we can also take it into account for the other experiments, remembering that they are not exact but only by a very small error.The average helps to even out the differing results which means that one, middle number is produced to work with. Because, also, I have no obvious anomalous results, readings that dont fit the pattern of the higher the concentration, the faster the reaction and so the shorter the time, the averages will follow the same trend.To look more closely at my data, I am going to enter my average times onto a line graph. I think this is the best type of graph to use as it fits my results of continuous date and will show any trends clearly. This is on the next page (graph 1). The concentration in molars is along the x-axis, the time of the reaction in seconds is along the y-axis. I have plotted my recorded points and drawn a curved line of best fit.From this data I c an now say that the concentration does effect the rate of reaction. The line of best fit shows very clearly, a definite trend that as you increase the concentration, you decrease the time taken, showing an increase in speed. Rate and time are inversely related. As one increases the other decreases, as seen on the graph, meaning that as time increases, rate of reaction decreases.What we see on the graph is a sharp decrease from about 200 seconds to about 50 seconds over a concentration range of only 0.3M showing fast reactions. Over another 11M there is a much more gradual decrease as it slows down, only covering approximately a range of 49 seconds. The remaining range of 2M covers 1 second and appears to be reaching a level line.The second graph (graph 2 over the page), again a line graph, is using the rate I worked out in the table, against the concentration. This gives us I more direct trend towards the effect of concentration on rate of reaction. It shows very definitely and clea rly that the higher the concentration, the higher the rate. As rate and time are inverse, I would expect an almost mirror of the concentration against time graph. This is what has happened. Instead of a sharp decrease followed by a gradual decrease as seen in the concentration against time graph, the concentration against rate graph shows a gradual increase followed by a sharp increase. My line of best fit covers 1.4M at a 0.05 rate very gradually, then a slight increase, and then over 1M, the rate increases by 0.567.My prediction before carrying out this experiment was that the higher the concentration of acid, the faster the rate of reaction. Both these graphs prove this to be correct. This is due to the activity of the molecules in the experiment. The rate of reaction is the amount of a substance that takes part in a chemical reaction in a given time. In order to react, the particles must collide with each other. If the rate of reaction is increasing, it is the amount of particle s colliding and therefore reacting that is increasing. As we increase the concentration of acid, the substance taking part in the chemical reaction (along with marble chips), the rate of reaction increases. This is because an increase in concentration increases the amount of collisions taking place. With more particles in the same volume, there is a greater and more common likely hood of collisions taking place. This is why concentration effects rate of reaction.The second part of my prediction was more detailed. I predicted that the level of concentration may also have a direct effect on the rate of reaction, meaning that if the reaction of a 2M acid was compared with that of a 1M acid, which is half the concentration, the rate of reaction will also be half.I looked at my graph of concentration against rate to investigate this. I used the examples of 1M and 2M and took the following readings of my graph and line of best fit.1M = rate of 0.032M = rate of 0.72This shows my prediction to be very incorrect. If it would be true, then my graph would show a straight line of equal increase. However, my line of best fit gradually increases, going against my prediction.From my results I can conclude that the rate of reaction between marble chips and acid is increased by an increase in concentration.EvaluationLooking back on the experiment, I think that I have carried out successful, dependable procedure that has given me precise and reliable evidence and results. First I will look at the practical work that I did. When doing the practical work, I followed my plan accurately. I kept it a safe and fair test and this is important. I experiment I planned was easy to carry out. Problems arose in temperature. The only variable was meant to be concentration, but due to uncontrollable circumstances, room temperature did alter. Luckily this occurred between sets of experiments which gave me additional information to look into. However, if that had happen part way through a set of results my results may have been slightly more irregular. To overcome this problem, results could have been taken all in one go. However, this was not practical in the spaces of time we were able to have. The other variable of surface area appeared to de successful. We already took precautions over this by using small marble chips instead of large, and so no problems arose.The accuracy of my results is as accurate as I think I would need. From my results I have produced graphs that show very definite and visible trends and patterns and no anomalous results and so the readings must have been correct. It may be possible to improve accuracy. I learnt from the strongest concentration, the 2M acid and the fastest reaction, that for short spaces of time the accuracy is not as exact. This could be solved by an alteration in equipment. If I were to do the experiment again, I would use a larger upturned measuring cylinder. The one I used held 45ml3 of solution. I found this took roughly 1 3 seconds to fill with gas, making it slightly inaccurate because it was a small space of time. However, if we increase the volume of the cylinder, it would take a longer time period. This may have improved accuracy. Other equipment all proved fine. I had no troubles with any other pieces of apparatus and would not alter them.To look into this investigation further of how concentration alters rate of reaction, I would like to look into concentration of solids in a reaction and concentrations of gases, similar to how we look at concentration of liquid and acid. It will be interesting to see if gases for instance have the same reaction patterns as liquids. I can see that my results mean that an increase of concentration of acid increases the rate. Would an increase of concentration of gas make any difference in the rate of reaction? This would help to add to an overall conclusion to the investigation.

The development and expansion of the logistics system in China's Research Proposal

The development and expansion of the logistics system in China's e-commerce market - comprehensive Impact assessment in the past decade - Research Proposal Example ch is to conduct a comprehensive impact assessment in the past decade of the development and expansion of the logistics system in China’s e-commerce market. This paper intends to explain why China’s e-commerce sector has grown at a very high rate in the past decade. In this study, the researcher will analyze the current situation of e-commerce development in China, and also figure out the obstacles faced by this sector. E-commerce in China has experienced tremendous growth in the past ten years. According to experts, this growth is largely attributed to the local environment in China. This paper intends to conduct a detailed analysis of this local environment. In addition, the researcher will introduce the current situation of e-commerce development in China and highlight the major challenges faced by this sector. In broader terms, the paper will conduct a comprehensive impact assessment in the past decade of the development and expansion of the logistics system in China’s e-commerce sector. The long term objective of this research is to analyze the development and expansion of the logistics system in China’s e-commerce sector. Particularly, the following are the sub-problems of this research: Studies have indicated demonstrated the importance of logistics in e-commerce. In any e-commerce business, there is need for support structures that would facilitate retail system. Nowadays businesses have moved away from traditional business models and have started accommodating new ways of conducting businesses (BARBOZA, 2015). Technically, in conventional retailing supply chain, the responsibility of purchasing goods lay in the hands of customers (Martin, 2014). The customers in this case travel to the stores to access products and services, and the retailers only provide the services of transportation of goods when the products are bulky. As noted in a study by Rodrigue, (2015), location is very important in retailing and retailers are often faced with the

Providing Ethical Alternatives Essay Example | Topics and Well Written Essays - 1000 words

Providing Ethical Alternatives - Essay Example Natural products contain â€Å"no artificial color, flavor, chemicals, preservatives, saccharine, aspartame, irradiated food and meat produced without use of growth hormones or antibiotics† (Brewer, 2004). The market has two co-owners who are equal partners. The CEO is the eldest child who holds an MBA. All family members work in the market in one location or another, so this is definitely a family-run business, though the market employs organic chefs, business managers, and others who develop relationships with local farmers and growers. Products offered include natural or organic foods, supplements, health and beauty aids, meats, plants and seed. Both locations offer cooking classes for specific food categories on a rotating schedule. The company belongs to local, regional and national growers associations, with a co-owner holding offices in two of the organizations. In the company’s mission statement is a major goal of enhancing the local economy, which affects local residents, by buying from local growers as much as possible. The statement goes on to further explain that buying locally also eliminates much of the fuel consumption that occurs when products are shipped across the country. This helps Providing Ethical Alternatives 2 reduce the environmental impact of vehicle emissions. One of the co-owners has spoken at congressional hearings several times to promote labeling of all foods that are genetically modified (GMO).

Comparrative Essay of Cooking Programs Essay Example for Free

Comparrative Essay of Cooking Programs Essay â€Å"Nigella Bites† And â€Å"Surfing the Menu† are two cooking programmes that share the same end result of delicious foods, but are very different in the contrasting aspects of social context, form and purpose which all help to reflect the cooking styles and personalities of their hosts. The atmosphere and contents of both shows generally appeal to the audiences of a different social status and/or age group. Set in Britain, the programme â€Å"Nigella Bites† appeals to an audience who belong to more of a winter climate. Each episode is formatted as a very comfortable and inviting home movie, using amateur camera work making it look more personal and family orientated. The show is filmed in Nigella’s own house and kitchen allowing her audience to feel welcomed. Images and visuals of illustrated foods and vibrant pink colours are shown throughout the opening credits with Jazz music engagingly flowing in the background. Many of her episodes begin with the view of a freezing British winter day/night and then follow onto Nigella being in the warmth of her own home. â€Å"Surfing the Menu† is a travelogue formatted programme set in Australia which promotes different towns and locations around the country in each episode. Along with catching/acquiring their own ingredients before cooking their meals, the hosts Curtis Stone and Ben O’Donoghue aka â€Å"Bender† also make sure to interact with the culture of each location they shoot in, making the Programme very relaxed as well as educational to the viewers. The opening credits consist of a range of photo shots and bright colours that go with the themes of the tourism and the outdoors. While the boys are traveling cameras makes sure to capture different angles and views of the scenery, including aerial views of the land around them. The atmosphere for each show is evidently contrasted; â€Å"Nigella Bites† is more of a matured cooking programme compared to the jovial attitude of â€Å"Surfing the Menu†. Both shows have very different exterior climates which appeal to different audiences: Nigella pursues the comforts of the indoor warmth compared to the blistering cold of its winters outside. This tends to attract those who like to spend their time inside during the cold/wet days, such as women and mothers living in a winter climate wanting to create more wholesome and warm meals for their friends and families. Nigella showcases a particular social lifestyle that represents the enjoyment involved in cooking and preparing meals for the ones that are dear to her. â€Å"Surfing the Menu† however attracts, and is more of a target to those who are more outgoing, young and interested in the experience of Australia’s summer cultures. Both international and Australians viewers are drawn in by the advertised beauty of the scenery captured during each episode because of all the multicultural nature and Australian cuisine involved, advertising tourism within the country. Nigella is portrayed as a very family orientated and homely person who always enjoys her food and loves to cook. She has a proper upper-class British accent and speaks in a husky, somewhat seductive voice. Nigella is currently in her late thirties and is seen as very sophisticated to her viewers, usually she cooks on her own but once her meal is cooked and ready she shows her serving and sharing the meals with her children and/or all of her family and friends. The way that she describes her ingredients and recipes along with the terminology she uses such as â€Å"stunning†, â€Å"simply beautiful† and â€Å"absolutely gorgeous† makes it sound as if she is in love with what she is making, the endearment and emphasis she puts in makes her so believable and intriguing. Nigella tends to mainly use informal measurements and verbs to describe what she is doing which remind you of how a mother figure would teach you how to cook. Ben and Curtis on the other hand are completely different to Nigella, ‘typical Aussie blokes’ is what they are stereotyped as. Both in their mid-twenties, always wearing informal and comfortable ‘beach clothing’ and using a lot of Australian ‘slang’ such as â€Å"Mate† and â€Å"Chuck it on the barbie† the boys give off a very relaxed and casual feeling to their viewers. The meals that Nigella prepares are heavy winter foods which are more time consuming but are perfect for those who have the time and love to cook. The â€Å"Surfing the Menu† recipes on the other hand are light summer foods that are quick and easy to prepare. Nigella makes sure her cupboards are full of all the different ingredients that she uses and she then gives her viewers an insight of the different things that she likes to always make sure she has stocked, what they can be used for and why they come in handy for her to have around. Curtis and Ben use ingredients that are imported into the local stores such as stir-fry noodles that they cook on an Australian barbeque, along with many other ingredients that they go out and personally collect from the local produce or catch on their own in each episode. As well as collecting their own ingredients from each place they visit, each meal they prepare always relates to the location they’re in making the programme even more entertaining and educational. Typical cooking program camera techniques are used throughout both programs â€Å"Nigella Bites† and â€Å"Surfing the Menu† these techniques include: close-ups on the hands on action with the food preparation, and snap shots throughout the shows that are used to cut out the un-necessary preparation time and skip straight to the cooking, then to the completed meals. To show their personalities and connect with their audience both of the programmes hosts make sure to speak and look directly towards/into the camera whenever possible. â€Å"Surfing the Menu† also uses aerial shots during the car travels to capture the different scenery around them. Highlighted sounds of the cooking appliances and food being prepared are accompanied by soft music underneath throughout each episode in both â€Å"Nigella Bites† and â€Å"Surfing the Menu† to draw more attention to what they are doing. The contrasting features between both â€Å"Nigella Bites† and â€Å"Surfing the Menu† such as; social context, form, purpose, audiences and the atmosphere differ due to the personalities and cooking styles of their hosts. Nigella’s show expresses her love for warm homely meals and cooking for her family and friends during the cold British winters and the programme is filmed as a home movie style, which gives off an inviting comfortable feel to her audience. Curtis and Ben’s show however, reflects on the adventures and experiences of local cultures during the warm Australian summer days and is filmed as a travelogue. Both of the programmes hosts have very similar camera etiquettes and happy/warm, engaging mannerisms.

Essay --

When the time came to choosing a potential career path, in my mind I had absolutely no doubt that I aspired to pursue dental hygiene. I believe that dentistry is one of the careers that has continual advancements in treatments and patient care, which provides endless opportunities to specialize in different branches of dentistry. Most importantly I find this profession to be rewarding. I have always envisioned to take on a profession which combines not only scientific appli-cations but also patient care that improves peoples' quality of life and this happens to be the best career which combines both of these important elements. My ambition to study dental hygiene has been further reinforced over the course of my gap year experience, working and studying as a dental nurse. I have become more aware of the growing importance of helping educate the general public about oral health paying closer attention to causes of some of the most disastrous oral conditions. Whilst working at the Ivory Dental Studio in London, I observed numerous procedures such as tooth onlays, root canal treatment...

Heathcliff: Victim or Villain? Essay

Although Heathcliff was a victim several times within Wuthering Heights, does this justify his immoral actions that hurt those around him? It is true that Catherine is extremely selfish, but she never intentionally or deliberately planned to hurt anyone in this novel. Heathcliff’s manipulative and vengeful actions are truly those of a villain. Heathcliff as a Victim: Nelly’s unwillingness to acknowledge Heathcliff’s presence to Catherine in a crucial time allowed him to overhear the hurtful things that she was saying. If Nelly had tried to stop Heathcliff from running away, he may have been present to hear all of the positive things that Catherine would later declare about him. Although Heathcliff is her soul mate, Catherine married Edgar instead because of his money and social status. Her selfishness makes Heathcliff a victim, and denies him of his true love. Heathcliff is a victim because his parents left him, and because of his darker skin. The Linton’s show prejudice towards him, and judge him by his looks. Catherine as a Victimizer Catherine truly hurts Heathcliff by marrying Edgar, whom she does not love. She knows that Heathcliff is her soul mate, but does not find him suitable for a husband. Her selfishness in turn causes many problems throughout the novel. When Edgar visits Wuthering Heights to see Catherine, she betrays Heathcliff by telling him to leave her and Edgar alone. Although Heathcliff and Catherine’s relationship was very strong, she completely forgets about him once Edgar arrives. Catherine expects everybody to do what she says, and becomes hysterical when  people do not. She pinches Nelly in a fit of passion, which shows her instability as a character. Heathcliff as a Villain Heathcliff purposely influences Hareton, who was at the time a young child, to hate his father. His negative affect on Hareton causes him to curse, and to tell people that his father Hindley is the devil. Heathcliff marries Isabella in order to hurt her brother, and treats her very poorly. He also hangs her dog for no reason other than to hurt anything associated with the Lintons (except Catherine, of course). This brutality shows how strong Heathcliff’s hatred truly was, and shows his willingness to hurt innocent people for revenge. He takes custody of Linton, who is terrified of his father. He is constantly weak, sick, and Heathcliff uses him to secure his fortune at Thrushcross Grange. He bribes young Cathy into marrying Linton, telling her she would not be able to see her dying father unless she did. Heathcliff knew that Cathy loved her father, but held her hostage until he had gotten what he had wanted. This displays how truly selfish he was, and to what extremes he would undergo in order to achieve his goals. Because of Heathcliff’s experiences as a victim, he became stronger and more determined to achieve his goals. However, no person has the right to express their anger on other innocent people, which is exactly what Heathcliff did. At first, we felt sympathy for his lack of luck in the first part of the novel. In the second half, we truly see what a horrible character he turns out to be.

Value Chain of HM Essay - 1073 Words

Hamp;M’s value chain: The value chain, made by Michael Porter, is really important to see how a company structure is created. The value chain is constituted by two parts: support activities (firm infrastructure, human resource management, technology development, procurement) and primary activities (inbound logistic, operations, outbound logistic, marketing and sales, service). (Johnson et al. 2011, p.97-99) Support activities: * Firm infrastructure: Hamp;M is present in 44 markets in the world, holds more than 2,500 stores and employs over 94,000 people. Its head office is located in Stockholm, Sweden where there also are the main departments for finance, buying and design, advertising, accounts, communications, logistics,†¦show more content†¦Nevertheless, Hamp;M could keep progressing in its online store. Indeed, even if Hamp;M is present in 44 countries, only 8 have access to the online store (Sweden, Germany, UK, Norway, Denmark, Austria, USA and Netherlands). Increasing it, Hamp;M could increase its sales a lot. * Procurement: As it is the second Europe’s cloth retailer company, for the production Hamp;M uses a lot of material and workers so its mains recourses are material, labour and energy. That is why small changes in prices can affect the company’s profit a lot, and the fact that it does not own any manufactories causes some problems in controlling the p roduction’s prices. However, not owning the factories can be an advantage in some cases. Indeed, if a problem appears, Hamp;M can easily change its suppliers. Moreover, due to its huge size, Hamp;M can easily manipulate with its suppliers to have the best quality at the lowest production’s price. Primary activities: * Inbound logistic: One of the core values of Hamp;M is the sustainability, and, thus, sustainability in production. The aim of Hamp;M is to offer good quality fashion at the best price and to achieve it, Hamp;M tries to avoid the waste. In this purpose, all the waste coming from the manufacturing, the transport and other sources are planned to be reused, recycled and reduced.(Hamp;M, 2012) * Operations: Hamp;M makes only one operation which is the design, as otherShow MoreRelatedDistribution Network Design And How They Are Managing Their Logistics1487 Words   |  6 Pagesparticular has seen an increase of consumers in developing markets for example of HMs plans for opening a retail store in India (HM, 2014). Recent study done by Nicola Calicchio shows that the BRIC countries account for a significant amount of recent growth, as large parts of their population rise out of poverty and realize their buying potential (Giertz-MaËšrtenson, 2012) This essay will be based on the retail company HM and will analyse their international strategy and how they manage their costRead MoreStrategic Capability And Competitive Advantage1489 Words   |  6 PagesScholes, Angwin, Regner, 2014, pp. 70). 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