MCQ
The weight of a molecule of the compound $C_{60}H_{122}$ is
  • $1.4 \times 10^{-21} \,g$
  • B
    $1.09 \times 10^{-21} \,g$
  • C
    $5.025 \times 10^{23} \,g$
  • D
    $16.023 \times 10^{23} \,g$

Answer

Correct option: A.
$1.4 \times 10^{-21} \,g$
a
$\mathrm{C}_{60} \mathrm{H}_{122} =60 \times 12+122 $

$=720+122 =842 $

wt of a molecule $=842 \times 1.67 \times 10^{-24}$

$=1.406 \times 10^{-21}\, \mathrm{g}$

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