What volume does one mole of of any of these gases occupy at standard temperature and pressure?

Question

The equation is: N2(g)+3H2(g)=2NH3

Answer 1

One mole of any one of the gases occupy the same volume at STP. At a standard pressure of one atmosphere and a standard temperature of 273 K, they obey the ideal gas equation which is V = nRT / P where n is the number of moles, R is the gas constant (0.0821 L-atm/mole-deg), T the absolute temperature, and P the pressure.

R = 0.0821 L-atm/mole-deg

T = 273 °K

P = 1 atm

n = 1 mole

V = 1 mole x 0.0821 L-atm/mole-deg x 273°K / 1 atm = 22.4 L