The specific heat capacity of lead is 0.13 J/g oC. How much heat (in J) is required to raise the temperature of 13.5 g of lead from 27.6°C to 38°C? Keep three significant figures in your answer.

18.3 J

Explanation:

Heat required to raise the temperature of copper from 27.6°C to 38°C is given by

Q = mCΔT

m = mass of Copper = 13.5 g

C = Specific heat capacity of Copper = 0.13 J/g.°C

ΔT = change in temperature of Copper = 38 - 27.6 = 10.4°C

Heat = 13.5 × 0.13 × 10.4 = 18.25 J = 18.3 J to 3s.f

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