00:01
This problem tells you that there's some reaction with non -metal and hydrogen gas, and it forms this unknown gas.
00:07
And the problem tells you that this reaction occurs at 440 degrees celsius.
00:11
The problem also gives you a fact that the density at a temperature and a certain pressure equals a certain grams over liters.
00:21
And so this problem is kind of tricky because this temperature at 440 degrees celsius is really just a distraction, because you can use everything you have here to find the molar mass of this unknown gas.
00:35
And that's what you want to do.
00:36
You want to identify what this gas is.
00:39
So to do this, so it tells us the density, which is this little p shape right here, and it's 3 .309 grams per one liter.
00:49
So for the simple sake, we can say the volume equals one liter.
00:53
This will cancel out.
00:55
And so then we're left with like as if the problem had given.
00:57
As a mass of 3 .309 grams...