Calculate the number of moles of the following:
(I) $52 g$ of $H e$

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Solution

Given that;
Mass of $H e = 52 g$
$∴$ Number of moles of $H e = \frac{M a s s o f H e}{M o l a r m a s s o f H e} = \frac{52}{4} m o l e s = 13 m o l e s$

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