Asked by Chelsey

a. How many moles of N2 are present in a 1.00 qt flask that has a pressure of 425 torr at a temperature of 35°C?

What is the mass in this na2?

It would be much simpler to change quart to liters first, then torr to kpa

PV=nRT

n= PV/RT Temps in Kelvins, V in liters, P in kpa

I did that but I keep getting the wrong answer
Answered by DrBob222
Why don't you show your work and let us find the error? You can play hide and seek with these problems all day long.
Answered by Chelsey
1L=1.06qt

1.00 / 1.06 = 0.94339623

425 torr = 56.7 kpa

35= 308.15 k

56.7/0.0821*308.15 = 212814.921
Answered by DrBob222
Your numbers don't look all that bad except you are using the wrong R. The value of 0.08206 is used with p in atm. When you use kPa R is 8.314. I would have used 0.946 for 1 qt to L (the easy way to do the conversion is to go to Google, type in "1.00 quart to" without the quotation marks and hit the enter key. Up pops 0.946 L).
Answered by Chelsey
I used what you said but I'm still getting the wrong answer. I'm sorry I really struggle in chemistry
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