How calculate the percantage yield in balanced chemical equation?

Is hot fudge heterogeneous? Which is the best place to find information about the hazards that are associated with a compound? What is Mn3Cl? Is steel naturally occurring? What kind of energy does a piece of radioactive metal use? Is sodium a metal non metal or a metaliod? What mass of Au is produced when 0.05000 mol of Au2S3 is reduced completely with excess H2? Are evaporation and condensation opposite to each other? Is a phosphate DNA or RNA? Is taking 36 mg of Ferrous Fumarate per day too much? Why is nitrogen less reactive than oxygen in terms of bonding? Do you put soap in the freezer? How many carbon atoms are represented by the model below? What is hypothesis of a acid base titration? Which element has 3 electrons in the 4 p sublevel? What does H and O stand for in H2O? What the opposite of tasteless? How could you tell that the media that was provided was sterile? What happens when an acid reacts chemically with an alkali? What is the reactants of Na plus O2 - Na2O?

How calculate the percantage yield in balanced chemical equation?