AP EAMCET · PHYSICS · Kinetic Theory of Gases
The internal energy of 4 moles of a monoatomic gas at a temperature of \(77^{\circ} \mathrm{C}\) is (R - Universal gas constant)
- A 1500 R
- B 1800 R
- C 2100 R
- D 3500 R
Answer & Solution
Correct Answer
(C) 2100 R
Step-by-step Solution
Detailed explanation
Internal energy for monoatomic gas: \(U = \frac{3}{2} nRT\) \(T = 77 + 273 = 350 \mathrm{K}\) \(U = \frac{3}{2} \times 4 \times R \times 350\) \(U = 2100 R\)
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