If 500 g of KCIO decomposes and produces 303 g of KCI how many grams of O2 are produced?
The balanced reaction from the problem is 2KCIO -> 2KCI + O2
So if 303g of KCI is formed that is approximately 1.702 mol (303 g
/ MW of KCI (178 g/mol)). For every 2 moles of KCI formed there is
1 mole of O2 formed. Therefore, 0.851 mol of O2 are produced and
multiplying by the MW of oxygen (32 g/mol) will yield 27.23 g of
oxygen.