Ideal Gas Law

chawkdee
If anyone has time, could you please show me the working of this problem.

Greatly appreciated

b]1. Homework Statement [/b]
If I have an unknown quantity of gas at a pressure of 1.2 atm, a volume of 31 liters, and a temperature of 87C, how many moles of gas do I have?

PV=nRT=NkT

The Attempt at a Solution

1.2 x 31=n8.3145 x (87+273)= N x 1.38066x10*23 x (87+273)

Can you tell me if the above numbers are correct please.

Homework Helper
If anyone has time, could you please show me the working of this problem.

Greatly appreciated

b]1. Homework Statement [/b]
If I have an unknown quantity of gas at a pressure of 1.2 atm, a volume of 31 liters, and a temperature of 87C, how many moles of gas do I have?

PV=nRT=NkT

The Attempt at a Solution

1.2 x 31=n8.3145 x (87+273)= N x 1.38066x10*23 x (87+273)

Can you tell me if the above numbers are correct please.
You have to stick to MKS units. Volume has to be in m^3 not litres. Otherwise, it looks fine.

AM

phsopher
The pressure should be in pascals as well.

Homework Helper
The pressure should be in pascals as well.

Of course! Thanks for catching that.

AM

Staff Emeritus
Homework Helper
... how many moles of gas do I have?

Homework Equations

PV=nRT=NkT

Given what is being asked, would you use nRT or NkT here?

chawkdee
Given what is being asked, would you use nRT or NkT here?

nRT ??

Staff Emeritus
Homework Helper
Why do you think that ... or is it just a random guess? The key here is: what do n and N mean?

chawkdee
Why do you think that ... or is it just a random guess? The key here is: what do n and N mean?

n - number of moles

N - number of molecules

Staff Emeritus