Calculate the number of moles of $C O_{2}$ presents in a sample containing $1.2044 \times 10^{24}$ molecules of $C O_{2}$ .

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2 N_{A}

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Solution

The correct option is B 2
$N u m b e r o f m o l e s = \frac{N u m b e r o f m o l e c u l e s}{A v o g a d r o n u m b e r}$
$= \frac{1.2044 \times 10^{24} m o l e c u l e s}{6.022 \times 10^{23} m o l e c u l e s / m o l}$
$= 2 m o l e s$

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Calculate the number of moles of CO2 presents in a sample containing 1.2044×1024 molecules of CO2.

The correct option is B 2Number of moles=Number of moleculesAvogadro number =1.2044×1024 molecules6.022×1023 molecules/mol =2 moles

Calculate the number of moles of $C O_{2}$ presents in a sample containing $1.2044 \times 10^{24}$ molecules of $C O_{2}$ .

The correct option is B 2
$N u m b e r o f m o l e s = \frac{N u m b e r o f m o l e c u l e s}{A v o g a d r o n u m b e r}$
$= \frac{1.2044 \times 10^{24} m o l e c u l e s}{6.022 \times 10^{23} m o l e c u l e s / m o l}$
$= 2 m o l e s$