P1V1=P2V2P_{1} V_{1}=P_{2} V_{2}P1V1=P2V2
V1T1=V2T2\frac{V_{1}}{T_{1}}=\frac{V_{2}}{T_{2}}T1V1=T2V2
P1T1=P2T2\frac{P_{1}}{T_{1}}=\frac{P_{2}}{T_{2}}T1P1=T2P2
V1V2=N1N2\frac{V_{1}}{V_{2}}=\frac{N_{1}}{N_{2}}V2V1=N2N1