Two moles of an ideal gas expand spontaneously into a vacuum. The work done is ............. $Joule$.

The work done during the expansion of a gas from a volume of $4 \ dm^3$ to $6 \ dm^3$ against a constant external pressure of $3 \ atm$ is $(1 \ L \ atm = 101.32 \ J)$ $...... \ J$

For the following reaction,the relation between $\Delta H$ and $\Delta U$ is:
$2 SO_{2(g)} + O_{2(g)} \rightarrow 2 SO_{3(g)}$

Which of the following is not a state function?
$(I) \, q + W \, (II) \, q \, (III) \, W \, (IV) \, H - TS$

For the isothermal expansion of an ideal gas:

Evaporation of water is