14) When 4.0 mol of oxygen are confined in a 20-L vessel at 76°C, the pressure is 6 atm. What is the new pressure when the oxygen is transferred to

a 60-L vessel, at constant temperature? (note: For Boyle's law n and T should not change) A) 2 atm B) 3 atm C) 4 atm D) 8 atm