25 grams of methane (CH4) is placed inside a constant volume calorimeter. After the fuel is burned, the temperature rises by 4.5 C. If the heat capacity of the calorimeter is 5.75 kJ/C, what is the heat released?

Express your answer in kJ/mole

Butane gas reacts with oxygen gas to give carbon dioxide gas and water vapor (gas). if you mix butane and oxygen in the correct stoichiometric ratio, and if the total pressure of the mixture is 390 mmhg, what is the pressure (in mmhg) of water vapor after the reaction is completed (temperature and volume do not change).