Physics Help Forum Heliumgas pressure

 Thermodynamics and Fluid Mechanics Thermodynamics and Fluid Mechanics Physics Help Forum

 Nov 20th 2018, 09:15 AM #1 Junior Member   Join Date: Nov 2018 Posts: 3 Heliumgas pressure 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?
 Nov 20th 2018, 10:10 AM #2 Senior Member     Join Date: Jun 2016 Location: England Posts: 1,080 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. __________________ ~\o/~
 Nov 20th 2018, 10:47 AM #3 Junior Member   Join Date: Nov 2018 Posts: 3 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 20th 2018, 12:34 PM #4 Senior Member   Join Date: Jun 2010 Location: NC Posts: 419 Hi, Here are three ITEMS that might be of interest to you. Using the Ideal Gas Equation | THERMO Spoken Here! Fuel Cell Proportions | THERMO Spoken Here! Victor Regnault | THERMO Spoken Here! Good luck with your studies... TSH
 Nov 21st 2018, 07:29 AM #5 Junior Member   Join Date: Nov 2018 Posts: 3 Thank you! Are you or is anyone able to show exactly how to calculate this?

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