The total number of protons in of is: | Mole Concept and Some Basic Concepts of Chemistry — Chem-Mantra

Name: JEE Advanced Chemistry
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Question

The total number of protons in $10 \text{ g}$ of $CaCO_3$ is:

Answer: A

💡 Solution & Explanation

$\text{Moles} = 10/100 = 0.1$. Protons per $CaCO_3 = 20(Ca) + 6(C) + 3 \times 8(O) = 50$. Total protons $= 0.1 \times 50 \times N_A = 5 N_A$.

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