Question

In a constant volume calorimeter 1g of a gas with molecular weight....
The 21 question
Please explain ua answer..

Answer 1

Answer:

Number of moles of the gas is 1/40=0.025

Total enthalpy change is=heat capacity*change in temperature

                                         =2.5*(298.75-298)

                                         =1.875

enthalpy of combustion per mole=1.875/0.025=75

So option (1) is correct.