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I need the answer as soon as possible 21. Pay load is defined as the difference between the mass of displaced air and the mass

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21. Pay load is defined as the difference between the mass of displaced air and the mass of the balloon. Calculate the pay load when a bal- loon of radius 10m, mass 100 kg is filled with helium at 7-66 bar at 27C. (Density of air = 1.2 kg mand R = 0.083 bar dm 3K-1 mol-). M

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