You placed 42.6 g of an unknown metal at 100 °C into a coffee cup calorimeter that contained 50.0 g of water that was initially at 22.0 °C. The equilibrium temperature of mixing (T0) was determined to be 23.1 °C. The calorimeter constant was known to be 51.5 J/°C.

a. What is the total amount of heat (J) lost by the metal?
b. What was the specific heat (J/g·°C) of the metal?