An iron calorimeter of mass 163 g contains 280 g of water. The system is in thermal equilibrium at +10°C. We place two blocks of metal in the water: one is a 45-g piece of copper with an initial temperature of +66°C; the second piece has a mass of 69 g and is initially at +100°C. The combined system reaches a final equilibrium temperature of +16°C. Calculate the specific heat capacity of the unknown second piece of metal.

Question

amistre64 · Answer

Q=mc $\triangle T $

if the system is in equilibrium then:  Q1 + Q2 + Q3 = 0, right?