Question

The kinetic energy of 1 g molecule of a gas, at normal temperature and pressure, is

• A. 0.56 × 104 J
• B. 2.7 × 102 J
• C. 1.3 × 102 J
• D. 3.4 × 103 J

Answer 1

Answer: (D)

3.4 × 103 J

Answer 2

The kinetic energy of 1g molecule of a gas at temperature T.

$= \frac{3}{2}RT = \frac{3}{2} \times 8.31 \times 273 = 3.4 \times 10^{3}J$