The number of atoms in 4.25 g of is approximately: | 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 4.25 g of $NH_3$ is approximately:

Answer: D

💡 Solution & Explanation

$\text{Moles} = 4.25/17 = 0.25$. $\text{Atoms} = 0.25 \times 4 \times N_A = 1 \times N_A \approx 6 \times 10^{23}$. [2]

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