Answer to Question #87173 in General Chemistry for mike

Question

A piece of solid aluminum weighing 28.3 g at a temperature of 583 °C is placed in 283 g of liquid aluminum at a temperature of 665 °C. After a while, the solid melts and a completely liquid sample remains. Calculate the temperature after thermal equilibrium is reached, assuming no heat loss to the surroundings.

The enthalpy of fusion of solid aluminum is ΔHfus = 10.8 kJ/mol at its melting point of 600 °C, and the molar heat capacities for solid and liquid aluminum are Csolid = 24.3 J/mol K and Cliquid = 29.4 J/mol K.

Tfinal = _______ °C

Answer 1

Tfinal =623 °C