MCQ
Which has highest number of atoms ?
- A$11.2\, L$ of $CO_2$ gas at $STP$
- B$2\,g$ of $H_2$
- C$2\,g-$ atom of $C$
- ✓$3\,g-$ molecule of $SO_2$
✓
Answer
Correct option: D.
$3\,g-$ molecule of $SO_2$
d
$\mathrm{CO}_{2} \Rightarrow \frac{11.2}{22.4} \times \mathrm{N}_{\mathrm{A}} \times 3=1.5 \mathrm{N}_{\mathrm{A}}$ atoms
$\mathrm{CO}_{2} \Rightarrow \frac{11.2}{22.4} \times \mathrm{N}_{\mathrm{A}} \times 3=1.5 \mathrm{N}_{\mathrm{A}}$ atoms
$\mathrm{H}_{2} \Rightarrow \frac{2 \mathrm{g}}{2} \times \mathrm{N}_{\mathrm{A}} \times 2=2 \mathrm{N}_{\mathrm{A}}$ atoms
$\mathrm{C} \Rightarrow 2 \times \mathrm{N}_{\mathrm{A}}$ atoms
$\mathrm{SO}_{2} \Rightarrow 3 \times \mathrm{N}_{\mathrm{A}} \times 3=9 \mathrm{N}_{\mathrm{A}}$ atoms
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