00:01
Hi.
00:03
So we are to determine the resultant solutions malaria.
00:08
We're given with the malarity and the volume of solutions a and b.
00:15
Now remember that malarity is moles of solute over the volume of the solution.
00:25
So since we're given with the malaria of solutions a and b, we can solve for the number of moles of, most of the solute in this solution.
00:37
So starting with solution a, we'll multiply the molarity, which is 1 .3, that's moles per liter, and then multiply the given volume, which is 100m, then we'll just have to convert this to liters.
00:53
A thousand aml is one liter.
00:56
We can cancel some units.
01:01
1 .3 times 100, divided by 8 ,000 is 0 .3 .3.
01:06
Now for the number of moles of b, same process, you multiply the malaria, 0 .8, multiply the volume, and multiply the conversion factor from ml to liters.
01:24
So 0 .8 times 500 divided by 8 ,000 is 2 .5, or that's 0 .4 moles.
01:35
So total number of moles would be equivalent to the sum of the number of moles of a and b...