The ideal gas equation is something like this;
pV = nRT
p = pressure (in atm)
V = volume (in dm³)
n = no. of moles (mol.)
R = molar gas constant, (0.082atm.dm³.mol⁻¹.K⁻¹)
T = absolute temperature (Kelvin)
making V the subject of the formular,
n = 4mol.
R = 0.082atm.dm³.mol⁻¹.K⁻¹
T = (-23 + 273)K = 250K
P = 300mmHg =
V = 207.733dm³If you appreciate my answer, please mark as best answer.