00:01
In this problem, we are asked to find how many milliliters of 0 .715 molar ammonium nitrate solution must be diluted with water to produce one liter of a solution that has a concentration of 2 .37 milligrams of nitrogen per milliliter.
00:17
We can start with the concentration that we were given in the problem statement and do unit conversions so that we can have a concentration in terms of grams per liter rather than milligrams per milliliter.
00:27
So we know that there are 1 ,000 milligrams in a gram, and we also know that there are 1 ,000 milliliters in a liter.
00:39
So we see that just these 2, 1 ,000s basically cancel out.
00:45
So we have the same number, 2 .37, just in grams of nitrogen per liter.
00:54
Now we can take this concentration and convert it to a molar concentration.
00:58
So we can start by dividing by the molar mass of nitrogen.
01:09
And we'd like to know the molarity of an ammonium nitrate solution...