The answer is true letter a
What exercise? Post a picture of it.
I believe the correct answer from the choices listed above is the last option It is Joseph Proust's law about the ratios of masses of elements in a compound did John Dalton’s work on the atomic structure help to explain. <span>Dalton's law of multiple proportions is part of the basis for modern atomic theory, along with </span>Joseph Proust's<span> law of definite composition. Hope this answers the question.</span>
