Chemistry · 2018
JEE Main · 16 April 2018, Shift 1 · Q31
An unknown chlorohydrocarbon has 3.55 % of chlorine. If each molecule of the hydrocarbon has one chlorine atom only; chlorine atoms present in 1 g of…
An unknown chlorohydrocarbon has $\displaystyle 3.55 \%$ of chlorine. If each molecule of the hydrocarbon has one chlorine atom only; chlorine atoms present in $\displaystyle 1$ g of chlorohydrocarbon are :
(Atomic wt. of $\displaystyle \mathrm{Cl}=35.5 \mathrm{u}$;
Avogadro constant $\displaystyle =6.023 \times 10^{23} \mathrm{~mol}^{-1}$ )
Official answer
(1)
$\displaystyle 6.023 \times 10^{20}$
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