potassium chlorate will decompose to produce potassium chloride and oxygen gas . if you begin with 45 kg of potassium chlorate, how many liters of oxygen gas measured at stp might you expect to produce from this reaction

Answer 1

Here is a worked example of this kind of problem. Just follow the steps. After you have mols O2 formed remember mols x 22.4L = volume O2 produced at STP.