Compute the relative rate of diffusion of argon to helium.
Would I use Grahams Law for this problem?

Question

Compute the relative rate of diffusion of argon to helium.
Would I use Grahams Law for this problem?

aaronq · Answer

yes

grimsnightmare · Answer

thank you.

grimsnightmare · Answer

So the answer I got was 1.58, correct?

aaronq · Answer

idk, post your calculations

grimsnightmare · Answer

|dw:1433192004999:dw|

aaronq · Answer

the wording says Ar to He, which is interpreted as Ar:He or $\dfrac{Ar}{He}$.

you wrote it in reverse

grimsnightmare · Answer

Oh I didn't think I had. Thank you. One last question, sorry, the numbers I have for them are correct right, I am supposed to use there mass?

aaronq · Answer

yep, uppercase $M$ stands for molar mass

grimsnightmare · Answer

Great thank you so much!

aaronq · Answer

no problem, glad i could help!

grimsnightmare · Answer

how do you find or calculate the units?

jfraser · Answer

there are no units, because you're comparing 2 different rates. The answer you get is the $factor$ that argon diffuses at relative to helium

jfraser · Answer

if the answer you get is 0.2, then argon diffuses 0.2 $times \space as \space fast$ as helium, etc etc