00:01
I've written here the overall thermochemical equation for the reaction of ethanol, sorry, methanol, excuse me, the decomposition of methanol to produce methane and o2.
00:17
I haven't put the states in because they're not really relevant to our calculation.
00:22
I've included the energy value here on the reactant side because this is an endothermic equation.
00:30
So, well, this is a really pretty straightforward dimensional analysis calculation.
00:38
So we start with what we're given, which is 82 .0 kilojoules.
00:43
Here's what we know.
00:44
We know that if we form two moles of methane, two moles of methane, that is going to release, sorry, use, excuse me, 252 .8 kilojoules of energy.
01:06
And so if we were to stop right here and divide 82 by 252 .8 and multiply by two, that would give us the number of moles of methane that was produced...