JEE Mains 27-July-2022 Shift 2 Solved Paper

A gas (Molar mass =280gmol−1 ) was burnt in excess O2 in a constant volume calorimeter and during combustion the temperature of calorimeter increased from 298.0K to 298.45K. If the heat capacity of calorimeter is 2.5‌kJ‌K−1 and enthalpy of combustion of gas is 9‌kJ‌mol−1 then amount of gas burnt is ________ g. (Nearest Integer)