Calculate the Kilojoules needed to heat 185 g of copper from 28°C to 194°C. Express your answer to three significant figures.

Answer 1

From Q = mcΔT and the specific heat for copper, Q = (185 g) (0.3768 J/g °C) (194 - 28) = [11,570 J] = 11.6 kJ to 3 sig figs.