Posted by **Jack** on Monday, December 13, 2010 at 9:29pm.

Given 20.0 L of ammonia gas at 5C and 730 torr, calculate the volume at 50C and 800 torr

- Chemistry -
**DrBob222**, Monday, December 13, 2010 at 9:49pm
Use PV = nRT. Don't forget T must be in Kelvin.

- Chemistry -
**Jack**, Monday, December 13, 2010 at 9:58pm
I've got 21.2L, but supposedly correct answer is 21.7L. How?

- Chemistry -
**DrBob222**, Monday, December 13, 2010 at 10:18pm
Unless I've missed something, the correct answer is 21.2 L. I think the book answer is not correct.

You can also use the general formula of

(P1V1/T1)=(P2V2/T2) which has no n in the formula. The advantage of using this one is that one calculation does it whereas when using PV = nRT one must do two calculations.

The P1V1/T1 formula also gives 21.2 L.

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