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Solution: The root-mean-square speed of gas molecules is 256.0 m/s at ...

Question

The root-mean-square speed of gas molecules is 256.0 m/s at a given T. The gas has a molar mass of 32.00 g/mol. What would be the root-mean-square speed for a gas with a molar mass of 131.0 g/mol?

a. 126.5 m/s

b. 62.53 m/s

c. 518.0 m/s

d. 1048 m/s

e. 189.8 m/s