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Question

The specific heat of solid copper metal at 273.15K and 1 bar pressure is 0.385 J/g*K. How much heat (in units of kJ) is required to raise the temperature of 89.83g of Cu(s) from 288.3K to 330.7K.

Assume the specific heat is constant over the given temperature range. (Show steps)

Answer 1

1. Find the change in temperature: 330.7 K - 288.3 K = 42.4 K
2. Change in heat is given as: q=mCΔT. Hence, the amount of heat needed would be (89.83 g) * (0.385 J/g*K) * (42.4 K) = 1470 J = 1.47 kJ (3 s.f.)