00:01
So here we know vinegar is 5 % acetic acid by mass, which tells us that out of 100 grams of vinegar, that means 5 grams of it are acetic acid, which i'll abbreviate as aa.
00:16
So that's percentage, so 5 out of 100 is 5 % and by mass tells us that the units are in mass units.
00:24
We also know that the density of vinegar is 1 .02 grams per 1 milliliter.
00:30
And so we have these two conversions, and we want to know what mass of acetic acid is in 185 milliliters of vinegar.
00:39
So what we need to do is we need to go from volume of vinegar into mass of acetic acid.
00:44
So right now we're in units of volume and we want a unit of mass.
00:48
So we'll need to first convert from volume to mass.
00:51
And if we look at our two conversions, the density converts between mass and volume.
00:56
So we can try using this first...