How many helium atoms are in a helium blimp containing 494 kg of helium?
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536 kg He x ( 1000 g / kg) x ( 1 mole He / 4 g He) x (6.022x 10^23 atoms / 1 mole) = 8.07 x 10^28 atoms.
Answered by
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Mass of He = 4g
No.of helium atoms = 494000/4 = 123,500 atoms
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