Question

An unknown metal whose mass is 52.0 g is initially at 80.0 oC. The metal is then submerged in 100.0 g of water initially at 22.0 oC. At equilibrium, the temperature of both the metal and wa- ter is 24.6 oC. Determine the heat flow for the water, qwat. Give your answer in units of kJ to two significant figures.