I want deviation for method of mixtures
Answers
Answer:
your answer
Explanation:
The method of mixture is used almost universally by scientists as a quick, easy, and semi-accurate specific heat test for a solid sample, but what makes this method extra special is the fact that it’s so simple that high school students around the world perform it as a hands-on example of how the specific heat capacities of materials are a part of the world around us. This very same experiment can be done with very expensive equipment in a high-tech lab, or in a home kitchen with some glassware, and the only difference will be the accuracy of the results, which can be improved by repeating the experiment and using the average of the results.
The biggest factor in the accuracy of your results will be the quality of calorimeter you are using. Calorimeters are used to measure the heat transfer from a sample into a container of water. Calorimeters can now be found in a few different and very complicated forms in professional labs, but we will be focused on the simple crucible model, as that is what fits the needs of this experiment.
A calorimeter of this sort has a dry inner chamber for the sample, (a crucible), the walls of which are made of a material with a high thermal conductance. The middle chamber is filled with the water that will have its temperature measured with a built-in thermometer probe. Most calorimeters will also have a built-in stir rod to speed up reactions and heat transfers. On the other side of the middle chambers thin walls will be an air gap, and then a thick layer of insulating material.
Professional calorimeters are designed this way to prevent heat from escaping as much as possible and they are often very expensive, but amateur, homemade, versions can be accurate enough for some uses. For example, if you nest two Styrofoam cups will make a water chamber followed by an air gap, then an insulating layer, as an inferior version of almost the same design of those that can be purchased.