2 moles of oxygen gas contain how many numbers of oxygen molecules?

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Solution

1 mole of oxygen gas= $6.0222 \times 10^{23}$ molecules
2 moles of oxygen gas = $2 \times 6.0222 \times 10^{23}$
= $1.24 \times 10^{24}$

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2 moles of oxygen gas contain how many numbers of oxygen molecules?

1 mole of oxygen gas= 6.0222×1023 molecules 2 moles of oxygen gas =2×6.0222×1023 =1.24×1024

1 mole of oxygen gas= $6.0222 \times 10^{23}$ molecules
2 moles of oxygen gas = $2 \times 6.0222 \times 10^{23}$
= $1.24 \times 10^{24}$