Question: What is the root mean square speed of gas molecules at temperature T?

Options:

1. (3RT/M)^0.5
2. (RT/M)^0.5
3. (2RT/M)^0.5
4. (RT/3M)^0.5

Correct Answer: (3RT/M)^0.5

Solution:

The root mean square speed (v_rms) is given by the formula v_rms = (3RT/M)^0.5, where R is the gas constant, T is the temperature, and M is the molar mass.