Molecular Mass and Formula Mass

Hello!

How are you all? Today we will discuss molecular mass and formula mass.

Molecular Mass:

The sum of atomic masses of all the atoms present in one molecule of a molecular substance, is it's molecular mass.

For example: molecular mass of water is 18 amu, chlorine is 71 amu and carbon dioxide is 44 amu.

Formula Mass:

The sum of atomic masses of all the atoms present in one formula unit of a substance.

For example: formula mass of sodium chloride is 58.5 amu and that of CaCO3 is 100 amu.

So this was the short introduction of basic terms. See you soon. Stay tuned.

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Relative Atomic Mass

Hello readers! Hope you will be fine. Our today's topic is relative atomic mass. let's start! It is the average mass of the atoms of that element as compared to1/12th the mass of an atom of carbon-12 isotope. Based on carbon-12 as a standard, the mass of an atom of carbon is 12 units and 1/12th of it comes to be 1 unit. When we compare atomic masses of other elements with atomic masses of carbon-12 atom, they are expressed as relative atomic masses of those elements. The unit of relative atomic mass unit is amu (Atomic mass unit). One atomic mass unit is 1/12th the mass of one atom of carbon-12. This was the short intro of Relative atomic mass. See you next with another topic. Thank you!

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