The number of atoms in 0.004 g of magnesium is: | Mole Concept and Some Basic Concepts of Chemistry — Chem-Mantra

Mole Concept and Some Basic Concepts of ChemistryeasyMCQ SINGLE

Question

The number of atoms in 0.004 g of magnesium is:

Answer: A

💡 Solution & Explanation

$\text{Moles} = 0.004 / 24 \approx 1.66 \times 10^{-4}$. $\text{Atoms} \approx 1.66 \times 10^{-4} \times 6 \times 10^{23} \approx 10^{20}$. [8]

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