question_answer

A mixture of 2 moles of helium gas (atomic mass = 4 amu) and 1 mole of argon gas (atomic mass = 40 amu) is kept at 300 K in a container. What is the ratio of the rms speeds \[\left( \frac{{{v}_{rms}}(helium)}{{{v}_{rms}}(\text{argon})} \right)\]?     

Answer:

3.16