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A hot air balloon is operated with the inside temperature of 125oF when the outside temperature...

A hot air balloon is operated with the inside temperature of 125oF when the outside temperature is 52oF. What must be the minimum volume of this balloon to carry a 300-kg load (including its own mass)? The atmospheric pressure is 1.013×105 Pa and the molecular mass of air is 29 atomic mass units.

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