The enthalpy of fusion of ice per mole is approximately $...$ $kJ / mol$.

Choose the reaction in which $\Delta H$ is not equal to $\Delta U$.

An ideal gas expands in volume from $1 \times 10^{-3} \ m^3$ to $1 \times 10^{-2} \ m^3$ at $300 \ K$ against a constant pressure of $1 \times 10^5 \ N \ m^{-2}$. The work done is

What happens when methane undergoes combustion in systems $A$ and $B$ respectively?

System $A$	System $B$
Temperature rise	Temperature remains same

During the isothermal expansion of an ideal gas,its enthalpy change is ......

An ideal gas is compressed from $10 \ dm^3$ to $1 \ dm^3$ at a constant pressure of $2 \ bar$. Calculate the work done on the gas during compression. (in $kJ$)