Question

explain with an example that law of conservation of mass is valid for chemical reaction

Answer 1

law of conservation of mass:-according to this law, during chemical reaction matter is neither created nor destroyed , rather it is converted from reactant to product.hence total mass of reactant before equal to total mass of product after a reaction.
example:-
CaCO3----> CaO+CO2
here we see calcium carbonate decompose into calcium oxide and carbon dioxide.
mass of CaCO3=100g
mass of CaO =56g
mass of CO2 =44g
now
mass of CaCO3=mass of CaO +mass of CO2
hence reactant mass=products mass
so, this law is true and valid all type reaction.

Answer 2

Answer:

here is the answer

law of conservation of mass:-according to this law, during chemical reaction matter is neither created nor destroyed , rather it is converted from reactant to product.hence total mass of reactant before equal to total mass of product after a reaction.

example:-

CaCO3----> CaO+CO2

here we see calcium carbonate decompose into calcium oxide and carbon dioxide.

mass of CaCO3=100g

mass of CaO =56g

mass of CO2 =44g

now

mass of CaCO3=mass of CaO +mass of CO2

hence reactant mass=products mass

so, this law is true and valid all type reaction.

Explanation: