When 94.8 g of potassium permaganant were heated, 5 liters of oxygen were formed

When 94.8 g of potassium permaganant were heated, 5 liters of oxygen were formed, which determines the volume fraction of oxygen yield.

Explanation: we will compose the reaction equation, find the amount of potassium permanganate substance, dividing its mass by molar mass, find the amount of oxygen substance, which is 2 times less than the amount of potassium permanganate, since according to the reaction their ratio is 1: 2 (O2: KMnO4) , we find the theoretical volume of oxygen that is released during the reaction, multiplying the number of islands by the molar volume, the volume fraction of the output is equal to the ratio of the practical volume to the theoretical one.