Consider the following unbalanced reaction.
P4(s) + F2(g) PF3(g)
How many grams of F2 are needed to produce 212 g of PF3 if the reaction has a 79.8% yield?
1 answer
Follow the directions I gave you before for determining the amount of product (stoichiometry problem) except that calculation was for a 100% yield. For this one start with 212/0.798 = ? grams in order to end up with 212 with a 79.8% yield. I shall be happy to check your calculations if you care to post them or if you get stuck explain where you are in the process and what you're having trouble with.
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