Question

4.9 g of potassium chlorate when heated produced1.92 g of oxygen and the residue left behind weighed 2.96 g.Show that these results illustrates the law of conservation of mass.

Please explain nicely.​

Answer 1

Answer:

If 4.9 g of potassium chlorate is used then it gives O2 and KCL. From the problem statement it is understood that 1.92 g of Oxygen is produced and the residual mass is 2.96g. Mass of the products come to 1.92+2.96=4.88g