Find the number of moles of N O 2 molecules in a sample containing 3-011 - 1023 molecules of N O 2-A- 0-5 molesB- 0-05 molesC- 2 molesD- 0-25 moles

The correct option is A 0.5 molesWe know, 6.022 × 10^23 molecules of NO_2 = 1 mole of NO_2 So, 3.011 × 10^23 molecules of NO_2 = 3.011 × 10^23/6.022 × 10^23 ...

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Standard IX

Chemistry

Molecules and Atomicity

Find the numb...

Question

Find the number of moles of $N O_{2}$ molecules in a sample containing $3.011 \times 10^{23}$ molecules of $N O_{2}$ .

0.05 moles

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0.5 moles

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2 moles

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0.25 moles

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Solution

The correct option is B 0.5 moles
We know,
$6.022 \times 10^{23}$ molecules of $N O_{2} = 1$ mole of $N O_{2}$
So, $3.011 \times 10^{23}$ molecules of $N O_{2}$
$= \frac{3.011 \times 10^{23}}{6.022 \times 10^{23}}$ moles = 0.5 moles of $N O_{2}$

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Find the number of moles of NO2 molecules in a sample containing 3.011×1023 molecules of NO2.

The correct option is B 0.5 molesWe know, 6.022×1023 molecules of NO2=1 mole of NO2 So, 3.011×1023 molecules of NO2 =3.011 × 10236.022 × 1023 moles = 0.5 moles of NO2

Find the number of moles of $N O_{2}$ molecules in a sample containing $3.011 \times 10^{23}$ molecules of $N O_{2}$ .

The correct option is B 0.5 moles
We know,
$6.022 \times 10^{23}$ molecules of $N O_{2} = 1$ mole of $N O_{2}$
So, $3.011 \times 10^{23}$ molecules of $N O_{2}$
$= \frac{3.011 \times 10^{23}}{6.022 \times 10^{23}}$ moles = 0.5 moles of $N O_{2}$