Question

which postulate of Dalton's atomic theory can explain the law of definite proportions​

Answer 1

Answer:

Thus, the postulate which explains the law of definite proportion is “The relative number and kind of atoms in a given compound remain constant”.

Answer 2

Answer

Law of definite proportion states that "the elements are always present in definite proportions by mass."

And we know that the last postulate of Dalton's atomic theory which states that, "In a given compound, the relative number and types of atoms are constant."

This postulate can explain the law of definite proportions.