Propane gas is used to heat a tank of water. If the tank contains 200 L of water, what mass of propane will be required to raise its temperature from 20 degrees C to 65 degrees C. The heat of combustion for propane is -2220 kJ/mol.

Answer 1

How much heat do you need?
q = mass x specific heat water x (Tfinal-Tinitial).

2220 kJ/mol propane x ymols = q
Solve for y moles.
Then y moles propane x molar mass propane = grams propane.
Check my thinking.

Answer 2

747.9