00:01
All right, so we have the question split in three.
00:04
So the first bit here, we have a volume of 4 .6 liters.
00:11
And then we have a mass of 235 .0 grams, which means formula mass for the sucrose is 342.
00:23
0 .3 grams per mole.
00:26
So we can figure out mass, which is basically going to be, sorry, moles, the number of moles.
00:34
For these sucrose for the first questions.
00:38
We're going to be mass, divided with the relative formula mass.
00:43
So we have 235 divided by 342.
00:48
0 .3 and we have 0 .68, 65 moles of sucrose.
01:00
Okay.
01:02
So from here now we can figure out molarity, which is basically the number of moles divided by the volume in liters.
01:11
We have 0 .685, the variable 4 .6 liters, and we have 0 .1492 molarity for that first question.
01:27
Okay...