81.In a constant volume calorimeter, 5g of a gas with molecular weight 40 was burnt in excess of oxygen at 298K . the temperature of the calorimeter was found to increase from 298K to 298.75K due to combustion process.given that the heat capacity of the calorimeter is2.5kJ /K,the numerical value for the Δ U of combustion of the gas in kJ/mol is 1) 15 2) 12 3) 90 4) 8

81.In a constant volume calorimeter, 5g of a gas with molecular weight

1.	81.In a constant volume calorimeter, 5g of a gas with molecular weight 40 was burnt in excess of oxygen at 298K . the temperature of the calorimeter was found to increase from 298K to 298.75K due to combustion process.given that the heat capacity of the calorimeter is2.5kJ /K,the numerical value for the Δ U of combustion of the gas in kJ/mol is 1) 15 2) 12 3) 90 4) 8
Answer» 81.In a constant volume calorimeter, 5g of a gas with molecular weight 40 was burnt in excess of oxygen at 298K . the temperature of the calorimeter was found to increase from 298K to 298.75K due to combustion process.given that the heat capacity of the calorimeter is2.5kJ /K,the numerical value for the Δ U of combustion of the gas in kJ/mol is 1) 15 2) 12 3) 90 4) 8