posted by Samantha

Krypton gas is four times denser than neon gas at the same temperature and pressure.

Which gas is predicted to effuse faster?

i got neon which is correct

but How much faster? how many times? i don't know how to get htis

1. bobpursley

lighter molecules effuse faster.

Graham's law: Rate of effusion is inverely proportional to the square root of molecular mass.

So neon effuses faster. Go to the head of your class.

how much faster: rateneon=rateKr*sqrt(83.7/20.1) or about twice as fast.

2. DrBob222

I answered this for you earlier.

3. Samantha

thanks bobpursley. drbob222 you answered the first part but i also needed helpp on the second

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