00:01
To calculate the molarity of a solution, we need to know the number of molds of the solute over the number of liters of the solution.
00:17
The solute is the substance that you're dissolving, and the solution is the solute and the solvent together.
00:25
So let's say that we know that we have a 6 .73 gram of sodium carbonate that we're putting into 250 milliliters of solution.
00:48
All right, well, you can notice grams is not moles and milliliters is not liters.
00:57
So we're going to have to do some conversions here to make this work.
01:01
So we have our 6 .73 grams of sodium carbonate in 250 milliliters of solution.
01:16
And now we can do some dimensional analysis to do these conversions.
01:21
We're going to need molar mass.
01:24
And so one mole of sodium carbonate has a molar mass of 105 .99 grams.
01:33
And we also know that there's a thousand milliliters in a liter.
01:44
And so you can see that our grams and grams cancel out...