Could someone help me with some Factor-Label Method problems? I have the answers but I didn't find it using the factor-label method and I need to be able to find it that way instead. I will give medal and fan!

Question

anonymous · Answer

Question 1:

How many grams of magnesium oxide can be produced when 97.2 g Mg react with 88.5 g O2? 

Unbalanced equation: Mg + O2 → MgO

Balanced equation: 2Mg+O2 ---> 2MgO

I know the answer is 161.2

I don't know how to find it using the factor label method.

anonymous · Answer

@Frostbite Hey, could you help me please?

frostbite · Answer

Never heard of the method honestly.
I would simply do a 100% theoretical yield, and assume that the reaction proceed, until the limiting chemical has been used. And from there just calculate the yield of magnesium oxide. In other words:
$$\Large n(  O_{2})=n(MgO) ~  \vee ~  n(Mg)=n(MgO)$$