00:01
To solve this question, the first thing that we need to do is find the empirical formula given the information that we were provided.
00:07
So to do that, we take the information we were provided, p, n, and cl.
00:14
We're going to convert our percentages into grams, and the way we do that is we just get rid of the percentage signs and we write grams.
00:20
So we've got 26 .7 grams of phosphorus, 12 .1 grams of nitrogen, and 61 .2 grams of chlorine.
00:28
We're going to convert each of these into moles using the molar mass off the periodic table.
00:35
Chlorine is 35 .45 grams, nitrogen is 14 .01 grams, phosphorus is 30 .97 grams.
00:45
So when we do these calculations, we get the following mole values.
00:52
What we do now on the empirical formula is we're going to divide by our smallest value, which is 0 .862.
00:58
So we divide all of these by 0 .862.
01:01
This is going to give us a mole ratio.
01:05
So this is equal to 1, this is equal to 1, and this is equal to 2.
01:10
What that allows us to then do is calculate the empirical formula or find the empirical formula...