Question

The mean kinetic energy of a gas at 300 K is 100 J. The mean energy of the gas at 450 K is equal to

• A. 100 J
• B. 3000 J
• C. 450 J
• D. 150 J

Answer 1

Answer: (D)

150 J

Answer 2

Average kinetic energy µ Temperature

̃ $\frac{E_{1}}{E_{2}} = \frac{T_{1}}{T_{2}}$ ̃ $\frac{100}{E_{2}} = \frac{300}{450}$ ̃ $E_{2} = 150J$