What is the mass of the silver block express your answer to

Question

1. A 31.1 g wafer of pure gold initially at 69.3 °C is submerged into 63.9 g of water at 27.2 °C in an insulated container. What is the final temperature of both substances at thermal equilibrium? Temperature in degrees celsius
2. A silver block, initially at 55.9 °C, is submerged into 100.0 g of water at 25.3 °C, in an insulated container. The final temperature of the mixture upon reaching thermal equilibrium is 27.9 °C. What is the mass of the silver block? Express your answer to two significant figures and include the appropriate units.