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A 716.4g sample of iron is subjected to a temperature change of -33.47°C while releasing 996.6 joules of heat. What is the specific heat cap
Question
A 716.4g sample of iron is subjected to a temperature change of -33.47°C while releasing 996.6 joules of heat. What is the specific heat capacity of iron?
Answer choices:
29.8 J/g°C
0.04 J/g°C
-0.04 J/g°C
1.39 J/g°C
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Chemistry
3 years
2021-08-17T17:00:26+00:00
2021-08-17T17:00:26+00:00 1 Answers
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Answers ( )
Answer:
Specific heat capacity of iron (c) = -0.04 J/g°C
Explanation:
Given:
Mass of sample of iron M = 716.4 gram
Change in temperature Δt = -33.47°C
Heat energy Q = 996.6 joules
Find:
Specific heat capacity of iron (c)
Computation:
We know that
Q = McΔt
So,
c = Q / M[Δt]
Specific heat capacity of iron (c) = 996.6 / (716.4)(-33.47)
Specific heat capacity of iron (c) = 996.6 / -23,977.908
Specific heat capacity of iron (c) = -0.0415
Specific heat capacity of iron (c) = -0.04 J/g°C