00:01
First, we'll rewrite the balanced chemical reaction.
00:06
Two magnesiums react with oxygen to produce two magnesium oxides.
00:14
If we have 10 .1 grams of magnesium, we can calculate the amount of magnesium oxide that would be produced if all of it is consumed.
00:23
We divide by the molar mass of magnesium to get moles, and then convert the moles magnesium to moles magnesium oxide with the 2 to 2 mole relationship.
00:35
Once we know moles magnesium oxide, we multiply by the molar mass magnesium oxide to get grams.
00:43
We do a similar calculation with the 10 .5 grams oxygen, converting it to moles oxygen, dividing by the molar mass o2, then converting moles o2 to moles mgo with a 1 to 2 mole relationship.
00:58
And then last of all, multiply by the molar mass magnesium oxide.
01:02
So if all the magnesium is consumed, would get 6 ,000.
01:06
16 .7 grams magnesium oxide...