a metal sample weighing 450 g and at a temperature of 99.1 c was placed in a 38.6 g of water in a calorimeter at 25.0 c. The calorimeter reached a final temperature of 32.8. How much heat flowed into the water

If a molecule with a molecular formula of c13h18 is treated with an excess of h2 in the presence of finally divided pt metal under conditions required for maximum hydrogenation of the molecule to give a molecule with a formula c13h24, how many rings are in the molecule?