# Questions on Ideal gas

1. Dec 16, 2006

### !Live_4Ever!

1. The problem statement, all variables and given/known data
Unknown: Pressure

Given:
V: 0.002 L
n: 0.019 mol
R: 8.31 (uh..any units here..?)
T: 498 K

2. Relevant equations
PV= nRT

3. The attempt at a solution
For some reason, the units don't cancel out when I attempt to reach the solution when I try to get the Pressure. So what are the proper units that I need to get a proper answer? I know the answer should be in kPa, but the "K, mol, L" units don't cancel out......Help~

2. Dec 16, 2006

### bob1182006

with the given units you need to use

R=0.082058 L*atm*mol-1*K-1

and convert atm to Pa where

1 atm = 101325 Pa

Last edited: Dec 16, 2006
3. Jan 22, 2007

### zombieparrot

small correction

You forgot the period between the 1 and the 3 :P
So its really 101.325 Pa

bob1182006 I'm sure you already knew this, but I'm mainly saying it so Live_4Ever! won't get confused.

4. Jan 22, 2007

### marcusl

Not so! Bob has the conversion correct, 1 atm is about 1e5 Pa.

5. Jan 23, 2007

### zombieparrot

Oh woops~

Sorry, i misread the units that were used...i thought it said KPa. Thanks for the correction marcusl, and sorry about that bob1182006

6. Aug 21, 2011

### Avi1794

Hi every1 there
I've a qtn troubling me !
A cylinder contains 2.0kg og Nitrogen at a pressure of 3.0x10^6 Pa and a temperature of 17 degrees ! What mass of nitrogen would a cylinder of the same mass contain at standard temperature and pressure?

7. Aug 21, 2011

### Punkyc7

shouldn't you have posted this in your own thread?

8. Aug 22, 2011

### sjb-2812

If I have 25 apples, how many apples would I have if I have the same number of apples as that?