What is molecular maa
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Yogita Ingle 6 years, 2 months ago
The molecular mass of a substance is the number of times the molecule of the substance is heavier than one-twelth the mass of an atom of carbon -12. Or, the molecular mass is equal to the sum of its atomic masses of all the atoms present in one molecule of a substance. For eg: Water (H2O)
Atomic mass of H= 1 unit
Atomic mass of O =16 units
The molecular mass of water = 2 × atomic mass of H+1 × atomic mass of O
= 2 × 1 + 16 × 1
= 18 units
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