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Q. The weight of a molecule of the compound $C_{60}\, H_{122}$ is $(a \times 10^{-23})$ grams. Approximate value o f $‘a’$ is

Some Basic Concepts of Chemistry

Solution:

Molecular weight of $C_{60}\, H_{122} = 842\, g$
$6.023 \times 10^{23}$ molecules weigh $842\, g$
$1$ molecule weighs $= \frac{842}{6.02 \times 10^{23}} g$