00:01
So here in this problem, we have, we were trying to get the grams of the us that was required to create the solution.
00:09
And so the first one, it tells us that we have a six molar nahoh solution, or i like to write moles over leaders, because just to expand it out to understand the cancellation of the units.
00:21
And it tells us that we have two liters of this.
00:23
So you can see already that the leaders cancel and you're in moles.
00:26
And then how do we get to grams? so to get to grams, we have to use the molar mass.
00:32
And the molar mass of n -a -o -h is 39 .99 grams per one mole.
00:40
And you can see the moles cancel now.
00:42
And you multiply the entire top, and you get 480.
00:48
Point grams, noh.
00:49
And this point right here, this decimal right here, is important because we have three sig -figs.
00:57
And so the next one, we have a 0 .10 -0...