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Specific Heat Question I need help answering this 2 part question, and I would a

ID: 531851 • Letter: S

Question

Specific Heat Question
I need help answering this 2 part question, and I would appreciate it if you could explain to me your answer.

A. Imagine that you are a designer for household pots. It is your job to determine which of the two metals used in this lab (aluminum or iron) would be best to use to make your pots out of. Remember, you want the pots to reach cooking temperature as fast as possible. Explain, using actual specific heat data, which metal is the best choice

B. Now that you have designed your pot, it is time to design the handles. Should the handles be made out of a material with a high or low specific heat capacity? Explain your answer.

Notes: I did the experiment and aluminum has .66 J/g C compared to iron which has 0.30 J/g C for specific heat.
I don't completely understand specific heat or specific heat capacity either, I would appreciate if you could explain it to me.

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ALSO THIS IS MY ATTEMPTED RESPONSE TO BOTH PARTS. I'm not sure if it's completely correct or if I'm making sense.

A. In the experiment, aluminum’s specific heat is 0.66 J/g C compared to iron’s specific heat which is 0.30 J/g C. The aluminum has a higher specific heat, meaning the metal has the capacity in joules to cause a change in temperature in another substance, like the water in the Styrofoam cup. The heat transferred over to the water from the aluminum increased the temperature to about 1.9 C compared to iron which caused only to increase the water by about 0.9 C. This shows that aluminum is a better metal to use, especially if I want to reach to cooking temperature fast.   

B. If I’m designing a pot, the handles should be made of a material with high heat capacity. If the material has a high heat capacity, then it can handle take in heat in a short amount of time but it won’t affect you when you touch it, meaning it won’t burn your hand. So, based on the comparison from the previous question of specific heat between aluminum and iron, I would use aluminum since it would be safer for users because it can take in a lot of heat enough to cook food, but it won’t burn the user when touching the handle.

Explanation / Answer

A. For designing the pot, metal having lower specific heat capacity should be used. Metal having low specific heat will require lesser amount of heat to raise the temperature to required value which indicates that it has lesser resistance to increase its temperature and can get heated up easily. As in this case, aluminium has high specific capacity 0.66 J/g C which means it required 0.66 J to raise temperature by 1 degree celsius whereas copper would need only 0.3 J to raise temperature by 1 degree celsius. We would always need the temperature to reach with lesser amount of heat supplied and this can be achieved by using Copper as material for pot

B. The handle for pot need not be hot since that is to be used by a person to hold the pan while cooking food. For this metal having high specific heat should be used since it would require higher amount of heat to increase the temperature of handle which in turn will make it easier to hold the handle.If a metal with low specific heat is used as handle then the handle would get heated up easily even with low amount of heat which will make it difficult to use the handle.So in this case, aluminium would be suggested to be used as handle of pot

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