Calculate the number of molecules present in $0.5$ moles of magnesium oxide $(M g O)$ .
[Atomic weights : $M g = 24, O = 16$ ]

14.09 \times 10^{23}

molecules

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3.0115 \times 10^{23}

molecules

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30.12 \times 10^{23}

molecules

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14.09 \times 10^{- 23}

molecules

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Solution

The correct option is A $3.0115 \times 10^{23}$ molecules
1 mole of MgO contains Avogadro's number of molecules which is $6.023 \times 10^{23}$ molecules.

0.5 mole of MgO will contain $0.5 \times 6.023 \times 10^{23} = 3.0115 \times 10^{23}$ molecules.

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Calculate the number of molecules present in 0.5 moles of magnesium oxide (MgO). [Atomic weights : Mg=24,O=16]

The correct option is A 3.0115×1023 molecules1 mole of MgO contains Avogadro's number of molecules which is 6.023×1023 molecules.0.5 mole of MgO will contain 0.5×6.023×1023=3.0115×1023 molecules.

Calculate the number of molecules present in $0.5$ moles of magnesium oxide $(M g O)$ .
[Atomic weights : $M g = 24, O = 16$ ]

The correct option is A $3.0115 \times 10^{23}$ molecules
1 mole of MgO contains Avogadro's number of molecules which is $6.023 \times 10^{23}$ molecules.

0.5 mole of MgO will contain $0.5 \times 6.023 \times 10^{23} = 3.0115 \times 10^{23}$ molecules.