Heliumgas pressure

Nov 2018
3
0
Hello! I´d like some help solving this:

In a 40l gasbottle there is helium in it´s normal state. With a constant temperature, 5 g of helium is added to the bottle. What is the new pressure?
 
Jun 2016
1,347
683
England
Can I assume that by "normal state" you mean "standard temperature and pressure"
(rather than normal state as opposed to superfluid, or plasma, or...)

If so this looks like a calculation of ideal gas and molar volumes...

work out the volume occupied by 5g of helium (at standard conditions)
and then work out how the pressure will change if you squeeze this extra gas into the container.
 
Nov 2018
3
0
Hi! Yes I have figured out that I should start off with pV=nRT. I'm not quite sure where to go from there, nor do I know how I can figure out n
 
Nov 2018
3
0
Thank you! Are you or is anyone able to show exactly how to calculate this?