(A) Step $1$: Calculate the number of moles of $H_2$ $(n_{H_2} = \frac{1 \ g}{2 \ g/mol} = 0.5 \ mol)$.Step $2$: Calculate the number of moles of $O_2

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(A) Step $1$: Calculate the number of moles of $H_2$ $(n_{H_2} = \frac{1 \ g}{2 \ g/mol} = 0.5 \ mol)$.Step $2$: Calculate the number of moles of $O_2$ $(n_{O_2} = \frac{8 \ g}{32 \ g/mol} = 0.25 \ mol)$.Step $3$: Calculate the mole fraction of $H_2$ $(x_{H_2} = \frac{n_{H_2}}{n_{H_2} + n_{O_2}} = \frac{0.5}{0.5 + 0.25} = \frac{0.5}{0.75} = 0.667)$.

Class 11 Chemistry Some Basic Concepts of Chemistry The mole concept

Medium

In a mixture of $1 \ g$ of $H_2$ and $8 \ g$ of $O_2$,the mole fraction of hydrogen is

A
$0.67$
B
$0.5$
C
$0.33$
D
None of these

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Some Basic Concepts of Chemistry

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The mole concept

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In a mixture of $1 \ g$ of $H_2$ and $8 \ g$ of $O_2$,the mole fraction of hydrogen is

Similar Questions

The number of atoms present in $0.1 \ mol$ of a triatomic gas is: $(N_A = 6.022 \times 10^{23} \ mol^{-1})$

If the density of water is $1 \, g \, cm^{-3}$,then the volume occupied by one molecule of water is approximately:

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Find the number of water molecules in $1 \ mL$ of water vapours at $STP$?

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