2KClO3 ----> 2KCl + 3O2
Calculate the number of grams of KClO3 decomposed given an initial sample mass of 2.16g and a residue mass of 1.71g?
Here is a KClO3 worked example. Just follow the steps.
http://www.jiskha.com/science/chemistry/stoichiometry.html
5.48 litres
To calculate the number of grams of KClO3 decomposed, we need to find the difference between the initial sample mass and the residue mass.
1. Calculate the mass of KClO3 decomposed:
Mass of KClO3 decomposed = Initial sample mass - Residue mass
Mass of KClO3 decomposed = 2.16g - 1.71g
Mass of KClO3 decomposed = 0.45g
Therefore, the number of grams of KClO3 decomposed is 0.45g.