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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Sigridomena 3 years 2021-08-17T17:00:26+00:00 1 Answers 0 views 0

Answers ( )

    0
    2021-08-17T17:02:05+00:00

    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

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