Question

As the temperature is raised from ${20}^{0}C$ to ${40}^{0}C$, the average kinetic energy of neon atoms changes by a factor of which of the following?

• A. $\frac{1}{2}$
• B. $\sqrt{\frac{313}{293}}$
• C. $\frac{313}{293}$
• D. None of the above.

Answer 1

Answer: (C)

$\frac{313}{293}$

Kinetic Energy $=\frac{3}{2}RT$

$E_1=\frac{3}{2}\times R\times 293$

$E_2=\frac{3}{2}\times R\times 313$

$\frac{E_2}{E_1}=\frac{313}{293}$

Hence, the correct option is $\text{C}$