Compound B is burned in a bomb calorimeter that contains 1.50 liters of water. When I burned 50.0 grams of compound B in the calorimeter, the temperature rise of the water in the calorimeter was 35.0 degrees C. If the heat of combustion of compound B is 2,150 kJ/mol, what is the molar mass of compound B?

Answer 1

amount of heat released per gram:
35*1.50*4.186kJ /50.0=4.395kJ/gram

molar mass=2150kJ/mole /4.395kj/gram
=499 grams/mole

check my calcs.

Answer 2

How did u get 4.186 kj?

Answer 3

That's the specific heat for H2O.
q = m*c*delta T.