Question

In: Physics

How much heat is required to raise an 820g copper pan from 11?C to 91?C if...

How much heat is required to raise an 820g copper pan from 11?C to 91?C if (a) the pan is empty; (b) the pan contains 1.4kg of water; and (c) the pan contains 3.8kg of mercury?

Part A

Express your answer using two significant figures.
?Qa =   kcal  

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Part B

Express your answer using two significant figures.
?Qb =   kcal  

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Part C

Express your answer using two significant figures.
?Qc =   kcal  

Solutions

Expert Solution

From defination of specific heat Q = msT

                                               Qa = 820 * 0.095 * 80 =6.23 kcal

                                               Qb = 6.23 + 1.4 * 1 * 80 = 6.34kcal

                                               Qc = 6.23 + 3.8 * 0.033 * 80 = 6.24 kcal

genius_generous answered 8 months ago
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