Posted by Cliff on Tuesday, November 23, 2010 at 6:49pm.
Tutors: thanks for your help.
Is this how this problem is solved ?
A sample of Xenon gas at 20degrees celcius and 0.570atm is cooled to a pressure of 0.100atm. If the volume remains constant what is the final temperature in degree celcius?
Solution: Using GayLussac's Law to find T2 or final temperature.
T2=P2T1/P1
=(0.100atm)(293kelvin)/0.570atm
=51.4kelvins
=51.4k  273k
=  222degrees celcius ??
And last question
If 0.105mol of He gas occupies a volume of 2.35L,what volume would 0.337 mol of He occupy?
Solution:
1 mole of a gas at STP = 22.4L
So, 0.337mol He * 22.4L/1 mol He = 7.55L.
Have a Good Evening.

Chemistry  MathMate, Tuesday, November 23, 2010 at 8:14pm
Both answers are correct.