Chapter 11: Problem 78
When it is heated, potassium chlorate decomposes to potassium chloride and oxygen: \(2 \mathrm{KClO}_{3}(s) \rightarrow 2 \mathrm{KCl}(s)+3 \mathrm{O}_{2}(g)\) A sample of solid \(\mathrm{KClO}_{3}\) decomposes to produce \(150.0 \mathrm{~mL}\) of oxygen at \(22.0^{\circ} \mathrm{C}\) and \(780.5 \mathrm{~mm} \mathrm{Hg}\). How many grams of \(\mathrm{KClO}_{3}\) decomposed?