Question

HELP!

a 650kg weather balloon is designed to lift a 4600kg package. what volume should the balloon have after being inflated with helium at 0°C and 1atm pressure to lift the total load? (hint. use the density value of helium)

thanks!!
bobpursley
Fluid mechanics? Really.

4600kg=weightdisplacedair-weighthelium
- densityair*volume -densityHe*volume
= V(28.9-4)E3 and V will be in kilo molar volumes (22.4kliters).

solve for V. If you want it in m^3, divide it by a 1000, multiply it by 22.4

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