The standard enthalpies of combustion of graphite and ch4(g) are −393.51 and −890.35 kj⋅mol−1 respectively. calculate the standard enthalpy of formation of al4c3(s) at 25 ∘c. express your answer to one decimal place and include the appropriate units. δh∘fδ h f ∘ = nothingnothing

1) a. water molecule breaks up into hydrogen and oxygen on passing electricity. does this involve breaking intermolecular or intramolecular forces of attraction. explain b. on boiling water changes to water vapor. does this involve breaking intermolecular or intramolecular forces of attraction. explain methanol evaporates faster than water. contrast the intermolecular forces and the vapor pressures of methanol and water?