A sample of nitrogen gas is confined in a 8.494 L container at 2.643 x 102 torr and 50 oC. How many moles of gas are present in the sample? So I thought I set this problem up right and when I type the answer into CALM my answer is incorrect. This is what I did:

Question

A sample of nitrogen gas is confined in a 8.494 L container at 2.643 x 102 torr and 50 oC. How many moles of gas are present in the sample? So I thought I set this problem up right and when I type the answer into CALM my answer is incorrect. This is what I did:

PV=nRT (2.643 x 102 torr)(8.494 L)=n(0.0821)(323.15 degrees Kelvin)

I divided the numbers to get "n" alone and my answer was 84.6 moles

Please explain what I am doing wrong! Thank you!

Answer 1

Thanks for showing your work. That makes it MUCH easier to spot the problem. P must be in atmospheres, not torr. Convert torr to atm by 2.643E2/760 = ?