1 kg  of air having an initial volume of \(0.3 \mathrm{~m}^{3}\) is heated at constant pressure of \(3.2 \mathrm{bar}\) until the volume is doubled. Find \((a)\) heat added, and \((b)\) work done. Take \(c_{p}=1.005\) \(\mathrm{kJ} / \mathrm{kg} . \mathrm{K}, c_{v}=0.718 \mathrm{~kJ} / \mathrm{kg} . \mathrm{K}\).