00:02
Hi there.
00:03
In this problem, we are trying to solve for density.
00:07
So we are going to use the equation from the lesson in this book where it says density is going to be equal to molar mass times pressure divided by the universal gas constant r and the kelvin temperature.
00:31
Let's go ahead and see what we have to work with in this problem.
00:35
Again, we are solved.
00:36
For density.
00:38
So we need the molar mass.
00:40
So first of all, we see that we have oxygen gas.
00:43
Oxygen gas is o2 because it is a diatomic gas.
00:49
So the molar mass of this will be two times the mass of oxygen, or in other words, 32 .00 grams per mole.
01:02
The pressure given in this problem is 1 .40 atmospheres.
01:12
The temperature is given to a us in celsius.
01:18
What do we know about temperature in any gas law problem? that's right.
01:23
It has to be in kelvin...