of contains molecules at a certain T and P. Molecules in of at same T and P are: | Mole Concept and Some Basic Concepts of Chemistry — Chem-Mantra

Question

$500 \text{ mL}$ of $NH_3$ contains $6.0 \times 10^{23}$ molecules at a certain T and P. Molecules in $100 \text{ mL}$ of $CO_2$ at same T and P are:

Answer: A

💡 Solution & Explanation

Ratio: $\frac{N_1}{V_1} = \frac{N_2}{V_2} \Rightarrow N_2 = \frac{100}{500} \times 6 \times 10^{23} = 1.2 \times 10^{23}$.

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