A balloon contains 1.00 mol helium gas at STP. What will the volume of the balloon be if the pressure increases to 2.00 atm? 11.2

A syringe contains 0.10 mol neon gas at STP. What volume does the syringe indicate? 2.24

A chemist adds 0.10 mol argon gas to the syringe. The pressure and temperature remain constant. What will be the volume on the syringe after the argon is added? 4.48 L