posted by Bill .
An ideal gas is allowed to expand from 6.00 L to 45.0 L at constant temperature.
By what factor does the volume increase?
The pressure will
Increase by that factor or decrease by that factor?
If the initial pressure was 105 atm, what is the final pressure?
45.0/6.0 = ?
P will decrease by that factor.
105 atm/factor = ?
(Note: use P1V1 = P2V2 to check that.