The heat capacity of benzene (c6h6) is 81.7 jmol–1°c–1. how much heat (in joules) is required to raise the temperature of 39.0 g of benzene by 10.0 °c?

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Question:

The heat capacity of benzene (c6h6) is 81.7 jmol–1°c–1. how much heat (in joules) is required to raise the temperature of 39.0 g of benzene by 10.0 °c?

Answer:

Answer is: .408,5 J.m(C₆H₆-benzene) = 39 g.
n(C₆H₆) = m(C₆H₆) / M(C₆H₆) = 39g ÷ 78g/mol = 0,5 mol.ΔT = 10,0°C, difference at temperature.c(benzene) = 81,7 J/mol·°C, specific heat of benzene.Q = n(benzene) · ΔT · c(benzene), heat of reaction.Q = 0,5 mol · 10,0°C · 81,7 J/mol·°C.Q = 408,5 J.

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