Answered: An empty balloon that weighs 0.722 g is…

Physics for Scientists and Engineers, Technology Update (No access codes included)

9th Edition

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter14: Fluid Mechanics

Section: Chapter Questions

Problem 14.39P: How many cubic meters of helium are required to lift a light balloon with a 400-kg payload to a...

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An empty balloon that weighs 0.722 g is filled with helium at normal atmospheric pressure (101.3 kPa) at room temperature (20.0°C) and reaches a volume of 4.22 dm³.

a) How much does the balloon weigh when filled with helium?

b) A balloon that weighs less than the corresponding volume of the ambient air will, according to Archimede's principle, float if you release it, while one that weighs more will fall to the ground. How much would the corresponding volume of air weigh? Assume that air molecules have a molecular weight of 28.8 g/mol.

c) Will this balloon float when you release it?

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