A sample of argon gas (molar mass 40 g) is at four times the absolute temperature of a sample of hydrogen gas (molar mass 2 g). The ratio of the rms speed of the argon molecules to that of the hydrogen is:
A. 1
B. 5
C. 1/5
D. ?5
E. 1/ ?5
Answer: D. ?5
Physics & Space Science
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