00:01
We're asked to calculate moles of solute in each of these questions.
00:06
For that, it helps us to remember that molarity is abbreviated with a capital m, represents molds for every one liter.
00:16
I have this many moles of solute and hco3 in every one liter of solution.
00:24
I'm told that i have 125 milliliters.
00:27
Again, notice i'm working with units of liters, so i need to change that to be 0 .125 liters.
00:35
And now that i have these two, i can multiply them together to find the number of moles.
00:48
So we have 0 .125 liters of solution multiplied by the concentration.
00:58
This will give me 0 .0 .0 to .2 .2.
01:05
Five moles of solute, which is nahco3...