Enthalpy of combustion of carbon is -395 kj.The amount of carbon needed to evolve 39.5 kJ is

The enthalpies of combustion of carbon and carbon monoxide are -393.5 and -283 kJ mol^(-1) respectively. The enthaly of formation of carbon monoxide per mole is :

The heat of combustion of carbon to CO_(2) is -393.5kJ//mol .The heat released upon the formation of 35.2g of CO_(2) from carbon and oxygen gas is

DeltaU of combustion of methane is -X kJ mol^-1 . The value of DeltaH is

If the heat of combustion of carbon monoxide at constant volume and at 17^@ C is -283.3 kJ, then its heat of combustion at constant pressure is _________ . (R = 8.314 J K^-1 mol^-1 )

Estimate the standard enthalpy of combustion of acetylene from the following data: Delta_fH^@ (CO_2) =-393.5 kj mol^(-1) Delta_fH^@ (H_2O) =-285.8 kj mol^(-1) Delta_fH^@ (C_2H_2) = + 227.3 kj mol^(-1)

A person requires A kJ of energy daily. If the heat of combustion of cane sugar is -B kJ, then his daily consumption of sugar would be

If heat of combustion of methane is -800 kJ, then heat of combustion of 4 xx 10^-4 kg of methane is ________ .

If the standard enthalpy of formation of methanol is -238.9 kJ mol^(-1) then entropy change of the surroundings will be.

The enthalpy of formation of ammonia is -46.0 kJ mol^(-1) . The enthalpy for the reaction 2N_(2)(g)+6H_(2)(g)to4NH_(3)(g)

If the enthalpy of vaporisation of water is 186.5 kJ mol^(-1) , then entropy of its vaporisation will be