Question

daltons's atomic theory is based on which law of chemical combination

Answer 1

$\mathbb{HEY \: MATE!!}$

✴ According to Dalton's Atomic Theory, every matter is composed of atoms can neither be created nor destroyed.

Thus, the total mass of the products must be equal to the total mass of the reactants.

It is same as $\textbf{`Law of Conservation}$ $\textbf{of mass'}$.

Hope it helps.
@charlie16.

Answer 2

$Dalton's \: atomic \: theory$
The main points of Dalton's atomic theory are: Elements are made of extremely small particles called atoms.Atoms of a given element are identical in size, mass and other properties;atoms of different elements differ in size, mass and other properties. Atomscannot be subdivided, created or destroyed.
All matter is made of atoms. Atomsare indivisible and indestructible. 3) Compounds are formed by a combination of two or more different kinds of atoms. 4) A chemical reaction is a rearrangement of atoms.