00:01
Hi, so to solve for this, since we're already given with the balance equation, we'll calculate directly the number of moles of iron and the number of moles of iron oxide.
00:10
We'll start, first question, number of moles of iron.
00:13
If we have 3 moles of fe2o3, multiply the stoichiometric ratio as per balance equation for every 2 moles of fe2o3 produced, it will require 4 moles of iron.
00:31
And then, i'll cancel some units, moles of fe2o3, and the remaining unit, as you can see here, is moles of iron.
00:37
So 3 times 4, that's 12, divided by 2, this will give us 6 .00 moles of iron.
00:49
Okay, that's our answer for the first question...