Rearrange the Heat Model to Find Specific Heat - Practice 1

5 questions0m 0s

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Under a constant-specific-heat, single-phase model with no unaccounted energy transfer, c = Q/(m deltaT). Use the sample's mass and measured change, not its final temperature alone. These ideal values are invented.

Worked example

If 60 kJ raises 2 kg by 5 C, c = 60/(2 x 5) = 6 kJ/(kg C).

Question 1 Ideal paper sample 1 receives 20 kJ; its 2 kg mass rises 5 C without phase change or losses. What is c in kJ/(kg C)? Answer

Question 2 Ideal paper sample 2 receives 30 kJ; its 2 kg mass rises 5 C without phase change or losses. What is c in kJ/(kg C)? Answer

Question 3 Ideal paper sample 3 receives 40 kJ; its 2 kg mass rises 5 C without phase change or losses. What is c in kJ/(kg C)? Answer

Question 4 Ideal paper sample 4 receives 50 kJ; its 2 kg mass rises 5 C without phase change or losses. What is c in kJ/(kg C)? Answer

Question 5 Ideal paper sample 5 receives 60 kJ; its 2 kg mass rises 5 C without phase change or losses. What is c in kJ/(kg C)? Answer