Question

definition of atomic mass and molecular mass​

Answer 1

Answer:

Atomic mass: The atomic mass is the mass of an atom. Its unit is the unified atomic mass units where 1 unified atomic mass unit is defined as ¹⁄₁₂ of carbon-12 atom.

Eg: Atomic mass of sodium(Na) = 22.98

Molecular mass: The molecular mass is the mass of a given molecule. It is the sum of atom mass of all the atoms in a molecule. It is measured in unified atomic mass units.

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Answer 2

Answer:

Atomic mass , Atomic mass of an element is the mass of 1atom of that element to the mass of 1atom of hydrogen

Step-by-step explanation:

Molecular mass , molecular mass of a substance is the mass of one molecules of that substances relatives to 1/12th mass of an atom of carbon -12