00:02
Hi there.
00:03
In this question, we are given a mass of salicylic acid, and we are trying to determine the mass of aspirin that we can make.
00:24
So this is what we call a mass -to -mass stochometry problem.
00:28
It's just that we're missing a balanced equation.
00:31
However, all of the information we need is given to us in the problem.
00:35
So in a mass -to -mass stoichiometry problem, the first thing we do is to convert from grams to moles.
00:43
Of the reactant that we're starting with, or of the substance.
00:46
It could be a product.
00:49
So to do that, we use its molar mass.
00:51
Well, that is given to us, so we're in good shape there.
00:55
Next, we convert to moles of the substance we are trying to find out information about.
01:02
So in this case, that will be moles of the aspirin.
01:05
And to do that, you use the mole ratio, which is also given to us in the problem.
01:11
And then finally, we convert from moles of aspirin.
01:13
Aspirin to mass of aspirin by using its molar mass.
01:18
Okay, so that's our plan for how we're going to solve this...