In an endothermic reaction,the value of the change in enthalpy $(\Delta H)$ is

The expansion of gas having no opposing force is called as

Consider the following reaction:
$CO_{(g)} + 1/2 O_{2_{(g)}} \to CO_{2_{(g)}}$
How are $\Delta E$ and $\Delta H$ related for the reaction?

Explain the enthalpy of dilution.

For $1 \, \text{mole}$ of an ideal gas,isothermal expansion occurs from a volume of $2 \, L$ to $6 \, L$ at a temperature of $300 \, K$. The value of $\Delta U$ for this process is .............

For a chemical reaction,when does $\Delta H = \Delta U$ occur?