Out of molar entropy $(I)$,specific volume $(II)$,heat capacity $(III)$ and volume $(IV)$,which are extensive properties?

Evaporation of water is

When an ideal gas expands isothermally from $5 \ m^3$ to $10 \ m^3$ at $25 \ ^{\circ}C$ against a constant pressure of $10^7 \ N \cdot m^{-2}$,then the work done on the gas is (in $MJ$)

For an endothermic process,$\Delta H$ will be ...... .

Which of the following processes involves zero work done?

For the reaction of nitrogen with hydrogen to form ammonia,$\Delta H^o = -92.2 \ kJ/mol$. If the reaction is carried out at a constant pressure of $20.0 \ atm$ and a volume change of $-1.16 \ L$,calculate the change in internal energy $(\Delta U)$ in $kJ$.