Pressure Units
1 atm = 760 mm Hg = 760 torr
1 atm = 1.013 x 105 Pa = 101.3 kPa
1 atm = 29.92 in. Hg = 14.69 psi
1 atm = 1013 millibars

Temperature must be in kelvins
K = oC + 273

Volume can be in any volume unit, but all volume units must be the same.
n, the number of moles of gas, is assumed constant in Unit G: The Gas Laws