27-08-2014
Chemistry

Answered

A helium balloon contains 0.48g of helium. Given the molecular weight of helium is 4.0 g/mol, how many moles of helium does it contain?

Answer :

27-08-2014

(0.48 gram) x (1mole / 4.0 gram) = 0.48/4.0 = 0.12 mole

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