00:02
Hi there.
00:04
In this question, we are given a number of molecules of hydrogen gas, and what we want to convert that to is moles.
00:19
So anytime we're trying to convert from number of particles to moles or from moles to number of particles, what we want to use is avagadra's number.
00:28
Avagadra's number gives us the number of particles in one mole of anything.
00:34
All right.
00:35
So one mole of hydrogen molecules, which is h2.
00:41
Hydrogen gas is going to be avagadro's number of molecules.
00:47
6 .02 times 10 to the 23rd molecules of hydrogen.
00:55
So this gives us an equality to use as a conversion factor.
00:58
So let's go ahead and start with the value we're given.
01:01
5 .080 times 10 to the 16th and that is molecules of h2.
01:17
Okay, so now we can use our equality.
01:19
We want molecules of h2 to cancel...