The number of molecules in 4.25 g of ammonia is: | Mole Concept and Some Basic Concepts of Chemistry — Chem-Mantra

Mole Concept and Some Basic Concepts of ChemistryeasyMCQ SINGLE

Question

The number of molecules in 4.25 g of ammonia is:

Answer: A

💡 Solution & Explanation

$\text{Moles} = 4.25 / 17 = 0.25$ mol. <br>$\text{Molecules} = 0.25 \times 6.022 \times 10^{23} \approx 1.505 \times 10^{23}$.

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