Using the general gas equation, \(\frac{ P_1 V_1}{ T_1} = \frac{ P_2 V_2}{ T_2}\) \(V_1 = 76cm^3\), \(T_1 = 27^0C\) = 27 + 273K = 300K, \(P_1\) = 80cm, at STP \(T_2 = 0^0C\) = 273K, \(P_2\) = 76cm, \(V_2\) = ? \(V_2 = \frac{ P_1\times V_1\times T_2}{P_2 \times T_1}\) \(V_2 = \frac{ 80 \times 76 \times 273}{76 \times 300}\) \(V_2 = 72.8cm^3\)