00:03
Okay, so this question is related to the properties of the solution.
00:09
Okay, so, you know, that's every time if you add some non -volatile compound into a solvent, then the boiling point will increase.
00:25
So the relationship between the increase of the boiling point is, can be expressed by these equations.
00:36
So the delta is a change of the temperature, and m is malality, and kb is the boiling point constant.
00:45
So in this case, dt is 61 .51 minus 61 .20, and m is what we're going to calculate, and k right here is 4 .95 kelvin, kelvin, k.
01:07
Kilogram per more.
01:12
So right here the unit is k, but you can also express its celsius degree because the increase of 1 kelvin is the same as the increment of 1 degree celsius.
01:26
So in this case, you get m, 0 .31, divided by 4 .95, so that will give you 0 .0 .05.
01:38
So that will give you 0 .0...