Question #6de44

1 Answer
harsh s.
Aug 18, 2017

see below

Explanation:

Molar mass of He = 4 g*mol^-1

So, 6.022*10^23 atoms of He = 4 g

So, 0.54 g of He = (6.022*10^23*0.54)/(4) = 8.1297*10^22 atoms

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