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May 30, 2015

Homework Help: AP Chemistry

Posted by Emily on Sunday, October 5, 2008 at 5:13pm.

I think this is a units issue, i keep getting the wrong answer.

the formula should be rate1/rate2= (molar mas 2/ molar mass1)^1/2

but every time i do it, i get it wrong, and when i do rate1/rate2= (molar mas 1/ molar mass2)^1/2, i get the right answer.

It takes 140 SECONDS for a sample of neon to effuse through a porus plug, how long does it take for the same volume of butane, C4H10 to effuse under the same conditions?

do i have to change seconds to anything? What unit does the law say rate is in?

Please help!

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