So we'll need the molar mass of the sucrose.

The molar mass of sucrose is 342.

We ought to carry more significant figures.

0.299 grams per mole.

So this is how many grams we have, this will convert it to moles.

And then we'll use the information we got from the previous slide to go

from moles of C12H22O11 to kilojules.

Kay, we know we have a negative 5,644 kilojules for every mole.

So when we multiply and divide these quantities out,

we get a negative 35.039 kilojoules.

So that would be how much heat is given off,

that is the heat of the reaction when the 12.125 grams reacts.

So now we're ready to plug everything into the previous equation,

let's look back up here.

We're going to be plugging everything we know into this equation.

We now have just determined the q of the reaction.

That took a lot of work.

Everything else is pretty much given to us.