Enthalpy of formation of methane is $-75 \ kJ / mol$. What is the enthalpy change for formation of $24 \ g$ of methane (in $kJ$)?

The standard enthalpy of formation,$\Delta H^o_f$ $(298 \ K)$,of methanol is represented by which of the following chemical equations?

When $6.0 \ g$ of graphite reacts with dihydrogen to give methane gas,$37.4 \ kJ$ of heat is liberated. What is the standard enthalpy of formation of $CH_{4(g)}$?

Explain the standard enthalpy of combustion $\left( \Delta_{c} H^{\theta} \right)$.

The heat of neutralization of $HCl$ and $NaOH$ is:

Identify the factor from the following on which the heat of reaction does not depend.