A 34.9-g sample of an unknown metal, initially at 232.8oC, is immersed in a 17.0-g sample of water (specific heat = 4.184 J g-1 oC-1), initially at 15.4oC, in an insulated cup. Once equilibrium is reached, the final temperature of the water-metal mixture is 28.2oC. What is the identity of the metal?