00:01
Okay, so let's look at the rates of effusion or the ratio of those rates are two isotopes.
00:06
Let's look at uranium 235 and uranium 238.
00:15
So what we want to know is the relative rates of effusion or the ratio of the rate, but we're going to look at 238 versus 235.
00:31
Molar masses of these are relatively close to one another.
00:36
You only differ by three mass units.
00:40
So we know that the rates of effusion should be roughly equal to one another.
00:44
Now how do we figure out rates of effusion? we look at graham's law of effusion.
00:51
And graham's law is that the relative rates of effusion are equal to the square root of the inverse of a fusion of the the molar masses.
01:03
So if you notice, if you notice we have a one in the numerator for the rates where the one is going to be in the denominator.
01:12
That's why it's inverse...