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A 10.0L balloon is filled with He gas at a pressure of 655mm Hg What is it's new pressure assuming no change in temperature if the volume of He is changed to 1.5L?
Wiki User
∙ 15y ago
You can use the Ideal Gas law which says that for an ideal gas the pressure times the volume divided by the temperature must be a constant number. And in this case since you are given that the temperature is a constant number then the gas law becomes "the pressue times the volume is a constant number". This means whatever their product is at one time , it will equal their product at a different time. The equation would be: Pf x Vf = Pi x Vi where the i & f mean initial & final. You solve this for the unknown final pressure ,Pf as: Pf = ( Pi x Vi )/Vf = ( 655 x 10 )/1.5 = 4367 mm of Hg
Wiki User
∙ 15y ago
Wiki User
∙ 14y agoUse P2V1 = P1V2.
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