Question

If 100g of calcium carbonate (whether in the form of marble or chalk) are decomposed completely, then $56g$ of calcium oxide and $44g$ of carbon dioxide are obtained. Which law of chemical combination is illustrated by this statement?

Answer 1

We know that the mass in an isolated system can neither be created nor be destroyed but are often transformed from one form to a different.

Complete step by step answer:
The law of conservation of mass is beneficial for a variety of calculations and may be wont to solve for unknown masses, such as the quantity of gas consumed or produced during a reaction.
It is the Law of conservation of mass “The mass of the substance before the decomposition is same as mass after the decomposition” given by scientist Lavoisier since the mass of calcium oxide is $56g$ and the mass of carbon dioxide is $44g$ so the total mass is $100{\text{g}}$ and consistent with the ques the mass of calcium Carbonate is $100gms$.
Example for the law of conservation of mass is,
Chemical reactions: to urge one molecule of water with the relative molecular mass of $10$ 10, Hydrogen with relative molecular mass $2$ is added with Oxygen whose relative molecular mass is $8$, thereby conserving the mass.

Note:
According to the law of conservation of mass, during any physical or chemical process, the matter is neither created nor destroyed. However, it's going to change from one form to another. Below, we've listed an experiment which will assist you verify the law of conservation of mass.

Requirements: H-shaped tube, also referred to as Landolt’s tube; common salt solution; nitrate solution.

Procedure: Common salt solution is taken in one limb of the H-tube and nitrate solution within the other limb as shown within the figure. Both the limbs are now sealed and weighed. Now the tubes are averted in order that the solutions can misunderstand together and react chemically. The reaction takes place and a white precipitate of chloride is obtained. The tube is weighed after the reaction has taken place. The mass of the tube is found to be precisely the same because the mass obtained before inverting the tube. This experiment clearly proves the law of conservation of mass.