calculate the Volume Occupied By 0.125mol of oxygen at 27 and Pressure Of 2.02*10[1mol of gas occupies 22.4dm

1 answer

PV = nRT
so, assuming you meant "0.125mol of oxygen at 27°C and Pressure Of 2.02*10 atm"
you want V such that
(20.2V)/(0.125*)27+273) = (22.4*1)/(1*273)

If not, fix your data and use the same formula.