The specific heat of a 100-g block of material is to be determined. The block is placed in a 25-g copper calorimeter that also holds 60 g of water. The system is initially at 20oC. Then 120mL of water at 80oC are added to the calorimeter vessel. When thermal equilibrium is attained, the temperature of the water is 54oC. Determine the specific heat of the block.