MCQ
The internal energy of $10\,g$ of nitrogen at $S.T.P$, is about ......... $J$
- A$2575$
- ✓$2025$
- C$3721$
- D$4051$
✓
Answer
Correct option: B.
$2025$
b
(b)
(b)
Number of moles of $N_2=\frac{10}{28}$
$U=\frac{f}{2} n R T$
$=\frac{5}{2} \times \frac{5}{14} \times R \times 273$
$=2025 \,J$
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