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  4. The number of gram molecules of chlorine in 6.02 × 1025 hydrogen chloride molecules is -

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Q. The number of gram molecules of chlorine in $6.02 \times 10^{25}$ hydrogen chloride molecules is -

KCETKCET 2007Some Basic Concepts of Chemistry

Solution:

1 Mole of $HCl =1+35.5=36.5=6.023 \times 10^{23}$
Number of gram molecules $=6.02 \times 10^{25} / 6.02 \times 10^{23}=100$