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The statement "Any given compound has a fixed proportion by mass of its constituents" is related to the.

The statement "Any given compound has a fixed proportion by mass of its constituents" is related to the. Correct Answer First law of Dalton's atomic theory

CONCEPT:

Dalton's atomic theory:

  • The scientific ‘Atomic Theory’ is usually credited to John Dalton.
  • He proposed the atomic theory to explain the laws of definite and multiple proportions obeyed by elements when they combine into compounds.
    • The first law says that any given compound has, a fixed proportion by mass of its constituents.
    • The second law says that when two elements form more than one compound, for a fixed mass of one element, the masses of the other elements are in ratio of small integers.
  • To explain the laws Dalton suggested, about 200 years ago, that the smallest constituents of an element are atoms.
  • Atoms of one element are identical but differ from those of other elements. A small number of atoms of each element combine to form a molecule of the compound.

Avogadro’s law (or hypothesis) says:

  • According to this law equal volumes of all gases at equal temperature and pressure have the same number of molecules.

EXPLANATION:

  • The first law of Dalton's atomic theory says that any given compound has, a fixed proportion by mass of its constituents. Hence, option 1 is correct.

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