Question

which law of chemical combination is used in solving the problem ?

(a) Law of constant proportions
(b) law of conservation of energy

(c) law of conservation of mass
(d) law of definite proportion​

Answer 1

Answer:

(d) law of definite proportion​

its a answer

Explanation:  

we can also say (  (a) Law of constant proportions  )

because it is a same laws just its called two names