00:01
We're starting off with knowing that we have three moles, k -o -h or potassium hydroxide, and it is dissolved into 0 .5 liters of water.
00:17
And we want to know first the concentration and second the os molarity.
00:30
And it gives us the note that hydroxide is a polyatomic ion, which essentially means that when k -o -h breaks down, it goes into two parts, a k plus, and an oh, h minus, just to kind of give you the idea that it's not breaking up into a k -n -o and an h is just breaking up into two parts, which will need that for the second aspect of it, the hospitality.
00:52
But for the concentration, pretty straightforward.
00:55
If our answers here are given in molar, and so molar is equal to moles per liter.
01:01
And so for the molarity, we're going to have three moles of k -o -h divided by 0 .5 liters of water.
01:10
So 3 divided by 0 .5 gives you 6 molar.
01:15
And so 6 -molar, k -o -h is number 2.
01:18
So that's your answer there.
01:21
And then draw a little line here, working on our osmalarity...