00:02
Hi there.
00:02
In this question, we are starting with a mass, and we are trying to get to a number of atoms that we will have.
00:13
So we have the mass of a compound.
00:19
All right.
00:19
So what we're first going to have to do is use that molar mass that they give us and convert to moles of the compound.
00:31
Then from moles of the compound, we can look at the formula and see how many atoms there are in every molecule to get moles of atoms.
00:40
And then finally, we can use avogadro's number to convert to number of atoms.
00:49
So that is our plan.
00:51
Let's go ahead and set that up and solve this problem.
00:55
We have 479 grams of kpf6 that we're starting with.
01:06
All right, and we are told what it's molar mass is, so we don't have to calculate that ourselves.
01:11
There are 184 .1 grams of kpf6.
01:18
In every mole of it...