Answer:
The volume is 16.7 liters.
Explanation:
STP conditions are:
1 atm as pressure
273 K as temperature (0°C)
So let's get the volume by the Ideal Gas Law, replacing the values.
P . V = n . R . T
1 atm . V = 0.750 moles . 0.082 L.atm /mol.K . 273 K
V = (0.750 moles . 0.082 L.atm /mol.K . 273 K) / 1 atm
V = 16.7 L