Question

Describe how the amount of heat released or absorbed related to specific heat capacity and amount of it? A) Amount of heat absorbed or released is doubled if quantity is doubled. If a different substance with half the specific heat capacity is used, the amount of heat absorbed or released is doubled. B) Amount of heat absorbed or released is doubled if quantity is cut in half. If a different substance with half the specific heat capacity is used, the amount of heat absorbed or released is doubled. C) Amount of heat absorbed or released is doubled if quantity is doubled. If a different substance with half the specific heat capacity is used, the amount of heat absorbed or released is cut in half. D) Amount of heat absorbed or released is doubled if quantity is cut in half. If a different substance with half the specific heat capacity is used, the amount of heat absorbed or released is cut in half.

Answer 1

Answer:

The answer is C).

Explanation:

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Answer 2

The correct answer is C): Amount of heat absorbed or released is doubled if quantity is doubled. If a different substance with half the specific heat capacity is used, the amount of heat absorbed or released is cut in half. 

Let's see why. the amount of heat Q absorbed or released is given by
$Q= m C_s \Delta T$
where m is the mass (so, the quantity of the substance), Cs is the specific heat of the substance and $\Delta T$ is the variation of temperature.

We can see from this formula that Q is directly proportional to both m and Cs. Therefore:
- If the amount of heat Q is doubled, m is also doubled
- If the specifice heat of the new substance is half of the original one, then Q is also cut in half.