00:02
There, the flow of water across the semipermeable membrane is known as osmosis.
00:09
So osmosis is when water flows from an area where the water is more concentrated to an area of lower water concentration.
00:43
So we're talking about the concentration of water.
00:45
Water is going to flow from the area where there's more water to an area where there's less water.
00:50
Well, if we think about having a solute in the water, when there's more solute, there's going to be less water.
00:58
So therefore, water, there's going to be a greater amount of water in the solute of the lower concentration.
01:05
So let's look at what we have here.
01:08
We have, and i'm just going to draw boxes rather than their cute little tubes here.
01:14
But we have two solutions here and a semi -permeable membrane here in the middle.
01:22
So water can pass through, but the other molecules cannot.
01:26
This one is glycerol and this one's sucrose.
01:31
And we're given an amount of solute in an amount of solution.
01:37
So what we need to do is figure out the molarity of each of these.
01:42
So starting with the glycerol, molarity is a way to calculate the amount of solute per amount of solution.
01:52
So there's 14 .0 grams of the glycerol.
01:59
I'm just is going to write its name.
02:00
It's easier than its formula.
02:02
And that is in 55 .2 milliliters of solution.
02:13
All right.
02:14
So we know that molarity, we need molarity here as our concentration.
02:18
Molarity is moles per liter.
02:19
So we need to convert the numerator to moles.
02:22
So let's do that first.
02:26
And to do that, we need the molar mass of glycerol.
02:28
So taking its formula there and adding together the masses from the periodic table for each element in the formula we get 92 .11 grams of the glycerol in every mole of it...