A 41.8 g sample of a metal is heated to 94.0 C and then placed in a calorimeter containing 112.4 g of water (C=4.18/gc) at 23.4 C. The final temperature of the water is 35.1 C. What is the heat capacity of the unknown metal? J g-C Given the following equation: 3 2 Al(s)+ O2(g) Al2O3(s) 2 Calculate the AH for the following reaction: 2 Al2O3(s) 4 Al(s) + 3 O2(g) AH = -2,321 kj kj