Volume of a Balloon

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Question 1-133L

7 points

A certain flexible weather balloon contains helium gas at a volume of 855 L. Initially, the balloon is at sea level, where the temperature is 25C and the barometric pressure is 724 torr. The balloon then rises to an altitude of 6000 ft, where the pressure is 605 torr and the temperature is 15C. What is the change in volume of the balloon (in L) as it ascends from sea level to 6000 ft?

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Hint 1

Which factor(s) remain(s) constant? Check all that apply: Pressure Volume Temperature Moles of helium Excellent job! Top of page

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Hint 2

How many moles of helium are in the weather balloon? 33.2mol. Keep up the excellent work. Top of page

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What is the ideal gas law? PV=nRT Keep up the great work! Top of page

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What is the value for the gas constant R? 0.08205 L atm/mol K Excellent! Top of page

Hint 3

Calculate the volume of the balloon with 33.3 mol helium at 15C and 605 torr. 988 L. Keep up the good work. Top of page

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