Question

water is used by proportional mass 2:16 shows the law of
constant composition,
conservation of mass​

Answer 1

Explanation:

The law of conservation of mass was created in 1789 by a French chemist, Antoine Lavoisier. The law of conservation of mass states that matter cannot be created or destroyed in a chemical reaction. For example, in Figure 2.2.3 , when wood burns, the mass of the soot, ashes, and gases, equals the original mass of the wood and the oxygen when it first reacted.