3. a) Commercially, compressed oxygen is sold in metal cylinders. If a 120-L cylinder is filled...

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3. a) Commercially, compressed oxygen is sold in metal cylinders. If a 120-L cylinder is filled with oxygen to a pressure of 132 atm at 22°C, what is the mass of O2 present? How many liters of oxygen gas at 1 atm and 22°C could the cylinder produce? (Assume ideal behavior) (R: 0.0821 L.atm/mol.K, Atomic mass (O): 16.00) 3. b) A gas is composed of 30.4% N and 69.6% O. Its density is 11.1 g/L at (-20°C) and 2.5 atm. What are the emprical and molecular formulas of the gas? (N: 14.0 g/mol, O: 16.0 g/mol) R: 0.0821 L.atm/mol.K. 3. a) Commercially, compressed oxygen is sold in metal cylinders. If a 120-L cylinder is filled with oxygen to a pressure of 132 atm at 22°C, what is the mass of O2 present? How many liters of oxygen gas at 1 atm and 22°C could the cylinder produce? (Assume ideal behavior) (R: 0.0821 L.atm/mol.K, Atomic mass (O): 16.00) 3. b) A gas is composed of 30.4% N and 69.6% O. Its density is 11.1 g/L at (-20°C) and 2.5 atm. What are the emprical and molecular formulas of the gas? (N: 14.0 g/mol, O: 16.0 g/mol) R: 0.0821 L.atm/mol.K.