# A #1.85*g# mass of calcium chloride was obtained from a #1.23*g# mass of #"calcium oxide"# and excess hydrochloric acid. What was the percentage yield?

##### 1 Answer

May 6, 2017

#### Answer:

We need

#### Explanation:

And

Sometimes when you do these equations, you might get a situation where the stoichiometry is NOT 1:1, and the yields must be appropriately calculated. This is why teachers insist that chemical reactions be stoichiometrically balanced.