Advanced Placement (AP)
Lexi1111111
2020-10-20 11:40:42
An iron bar of mass 869 g cools from 94 C to 5 C . Calculate the heat releases in (Kilojoules) by the metal.
ANSWERS
LeiaSeutter411
2020-10-20 16:21:06

For this question, we apply the equation: Q = mCp ΔT Where m is the mass of the substance, Cp is its specific heat capacity and ΔT is the temperature change. Q = 896 x 0.45 x (5 - 94) Q = -35884.8 Joules So about -36 kilojoules of heat is released.

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