Calculate the change in internal energy of the system if 25 kJ of work done by the system and it absorbs 10 kJ of heat.

Identify from following an example of intensive property?

Calculate the work done in following reaction at $27^{\circ} \mathrm{C}$.

$$ \begin{aligned} & 4 \mathrm{SO}_{2(\mathrm{~g})}+2 \mathrm{O}_{2(\mathrm{~g})} \longrightarrow 4 \mathrm{SO}_{3(\mathrm{~g})} \\ & \left(\mathrm{R}=8.314 \mathrm{~J} \mathrm{~K}^{-1} \mathrm{~mol}^{-1}\right) \end{aligned} $$

Which of the following set of thermodynamic conditions is true for the reaction to be spontaneous at high temperature?