00:01
In this problem, we were given the reaction of iron with oxygen to produce iron three oxide.
00:08
And we know that, based on the balanced chemical reaction of four moles of iron reacting with three moles of oxygen, it will produce 16152 kilojoules.
00:17
1652 kilojoules will be released.
00:21
So, based on the chemical reaction, four moles of iron will release 16152 kilojoules of energy, the relationship being 4 moles of iron to negative 1652 kilojoules.
00:36
To determine how much heat is released when one mole of fe203 is produced, well, the balanced chemical reaction says that when 2 moles of fe203 is produced, 1652 kilojoules are released.
00:51
So if one mole is produced, then half of that negative 826 kilo -joules would be released.
00:58
To determine how much heat is released when a gram of iron reacts, assuming that we have a fair amount of excess oxygen, we can do a simple conversion where one gram goes of iron goes to moles of iron using the molar mass of iron...
