State the law of conservation of mass? Describe landolt experiment

Mass preservation.

Explanation:

Mass of the system must remain the same over time, as the system's mass cannot alter according to the law of preservation of mass for any closed system.

Landolt Experiment -

Landolt was German chemist, He demonstrated the law of preservation of mass experimentally by utilizing H - glass tube filled with silver nitrate in appendage A and HCl corrosive in appendage B. The reactants were blended and a white accelerate of Silver chloride was shaped alongside nitric corrosive. The tube is weighed once more.