October 8, 2015

Homework Help: Chemistry

Posted by Jess on Wednesday, November 10, 2010 at 12:33am.

I keep calculating the square root of 3RT/M, and am not worrying about the temperature. I keep using 238 and 235 as my M when I do calculate it for both isotopes. Then I end up getting 1.00 as my final answer. That can't possibly be correct, can it?
The question was: The two isotopes of uranium, 238U and 235U, can be separated by effusion of the corresponding UF6 gases. What is the ratio (in the form of a decimal) of the root-mean-square speed of 238UF to that of 235UF6 at constant temperature?

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