00:01
All right, so we have 133 milliliters of a solution that's 7 .90 molar copper chloride cucl2.
00:11
And we want to get to the point where if we have 51 .5 milliliters is going to contain 4 .49 grams of cucl2.
00:23
So let's find what is the desired end molarity here? so if we have 4 .49 grams of cucl2, let's convert that to moles by dividing by the molar mass, which is 134 .45 grams per mole.
00:46
And then we will divide out the 51 .5 milliliters so that we have moles per milliliter.
00:53
And lastly, convert milliliters to liters.
00:58
So this gives us our molar concentration.
01:00
All the units can't slow except moles per liter, which is.
01:03
What we want and then we get 0 .648 molar.
01:19
All right.
01:20
So we want to go from 133 milliliters of 7 .9 molar to what volume of 0 .648 molar...