ENTHALPY OF COMBUSTION

If x_(1) , x_(2) and x_(3) are enthalpies of H-H , O=O and O-H bonds respective, and x_(4) is the enthaply of vaporisation of water, estimate the standard enthalpy opf combustion of bydrogen.

The enthalpies of combustion of carbon and carbon momoxide are -390KJ respectively. The enthalpy of fomation of CO in KJ is

Standard Enthalpy Change of Formation ,Combustion and Neutralisation | Hess's law

The enthalpies of combustion of CH_(4) and C_(2)H_(6) are -890.3 and -1559.7 k J mol^(-1) respectively. Which of the two has greater efficiency of fuel per gram?

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

The enthalpies of combustion of carbon and carbon monoxide are -390 kJ mol^(-1) and -278 kJ mol^(-1) respectively. The enthalpy of formation of carbon monoxide is

Calculate the enthalpy change accompanying the transformation of C(graphite) to C(diamond). Given that the enthalpies of combustion of graphite and diamond are 393.5 and 395.4 KJ respectively