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Answer to Question #56478 in General Chemistry for jhon

Question #56478
a ballon filled with helium gas at 1.00atm occupies 11.9L. what volume would the volume occupy in the upper atmosphere, at a pressure of 0.17atm and a constant temperature?
Expert's answer
The equation states that product of pressure and volume is a constant for a given mass of confined gas as long as the temperature is constant. For comparing the same substance under two different sets of condition, the law can be usefully expressed as
P1 V1 = P2 V2
Here P1 and V1 represent the original pressure and volume, respectively, and P2 and V2 represent the second pressure and volume.
V2 = 1*11.9/0.17 = 70 L
Answer: 70L.

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