What is the volume of 3.5 moles of oxygen gas (O2) at standard temperature and pressure (STP)?

Question

6.4 L

22.4 L

32.0 L

78.4 L

Answer 1

I thought I did this for you about 25 posts back.
22.4 L/mole x 3.5 moles = ?? L

Answer 2

78.4 liters thank you!