00:01
So to solve for this, equation for percent mass, the equivalent to, since our salute is gross, so mass of salute over mass of solution multiplied by 100 percent will be equivalent to the mass percent of sucrose.
00:25
Okay, so this equation will solve 40.
00:28
Since we have the mass of our solute so we are going to solve for the mass of the solution so for a we have 4 .6 % so close by mass so let's 4 .6 % here then we divided by 100 % and then we multiply the mass of it's not multiply let's write first the mass of the silhouette is said to be 16 grams okay, 16 grams over the known mass absolution.
01:04
So solving for this, we'll get, for answer for a, mass absolution is third four, three for seven point eight to three, and two significant figures, you could write this as 350 grams, okay, so that's two significant figures.
01:27
So this is our answer for a and then for b we have 3 .5 % soaprose.
01:35
So we'll just use this equation we just substitute 3 .5 % here.
01:41
Okay, 3 .5 % divided by 100%.
01:46
And again we have here the mass of sucrose which is 16 and the mass of solution our unknown...