A room with dimensions 9.00 m by 6.00 m by 3.50 m is filled with pure oxygen at 19.0 C and 1.00 atm . The molar mass of oxygen is 32 g/mol. How many

A room with dimensions 9.00 m by 6.00 m by 3.50 m is filled with pure oxygen at 19.0 ∘C and 1.00 atm . The molar mass of oxygen is 32 g/mol.
How many moles of oxygen are required?
What is the mass of this oxygen, in kilograms?