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Mole Concept and Avogadro's Number

1 mol of CH...

Question

$1 m o l$ of ${C H}_{4}$ contains?

6.02 \times 10^{23}

atoms of H

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4 g

atom of hydrogen

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1.81 \times 10^{23}

molecules of

{C H}_{4}

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3.0 g

of carbon

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Solution

The correct option is C $4 g$ atom of hydrogen
$1$ mole of methane contains $1$ mole of $C$ , $4$ mole of $H$ .
$12 g$ of $C$ ( $1$ mole\ =\ $12 g$ )
$4 g$ of $H$ ( $4$ moles)
So, $4 g$ of Hydrogen is the answer.
Option $B$ is the correct answer.

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