Calculate the total pressure (in atm) of a mixture of 0.0300 mol of helium, He and 0.0200 mol of oxygen O2 in a 4.00 L flask at 20 degrees C. Assume the ideal gas behavior.

Question

Can someone help me start this out... Please

Answer 1

Use PV = nRT
for n just add the mols of He and O2. They don't react with each other.

Answer 2

It's easy