### Law of Conservation of Mass Formula :

Law of conservation of mass δ ρ_{(m/V)} in meter per volume and divided by the δ t_{(s)} in second and addition is the divergence ∇( ρ_{(m/v)} in meter per volume and multiply the velocity V_{(m/s)} in meter per second is equal to the zero. Hence the law of conservation of mass formula can be written as

**δ ρ _{(m/V)} / δ t_{(s)} + ∇( ρ_{(m/v)}* V_{(m/s)}) =0**

Where,

Ρ → density in m/v

T → time in second

V → velocity in m/s

∇ → divergence

### Sample Example :

### Example 1:

Calculate the reaction in terms of law of conservation of mass? In a 20 grams of calcium carbonate (caco_{3})produces 4.8 grams of carbon dioxide (co_{2}) and 5.5 grams of calcium oxide (cao).

### Answer:

According to law of conservation of mass

Mass of reactants =Mass of products

20 gram of caco_{3}=4.8 grams of co_{2}+5.5 grams of cao

20gram of reactant =20 grams of products

Hence it is proved that the law of conservation of mass is followed by the above reaction

### Example 2:

Calculate the reaction in terms of law of conservation of mass? In a 80 grams of calcium carbonate (caco_{3})produces 3.8 grams of carbon dioxide (co_{2}) and 4.5 grams of calcium oxide (cao).

### Answer:

According to law of conservation of mass

Mass of reactants =Mass of products

80 gram of caco_{3}=3.8 grams of co_{2}+4.5 grams of cao

80gram of reactant =80 grams of products

Hence it is proved that the law of conservation of mass is followed by the above reaction