agata180779 agata180779 08-12-2022 Chemistry contestada Potassium nitrate (KNO3) decomposes on heating to give potassium nitrite (KNO₂) and oxygen (O₂) 1 When 4.04 g of KNO3 is heated, 3.40 g of KNO2 is produced Use the Law of Conservation of Mass to work out the mass of O₂ produced.