Question

Which postulate of Dalton's atomic theory can explain the law of conservation of mass ?​

Answer 1

Postulates of Dalton's Atomic Theory. The matter is made up of indivisible particles known as atoms. ... This can also be stated as all the atoms of an element have identical mass while the atoms of different elements have different masses. Atoms of different elements combine in fixed ratios to form compounds

Answer 2

The postulate of Dalton's atomic theory which is a result of the law of conservation of mass is:

Atoms are indivisible particles, which can neither be created nor destroyed in a chemical reaction.