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| 1. |
Atom molecular mass |
| Answer» Molecular mass of the molecule: \xa0The sum of the atomic masses of all the atoms in a molecule of a substance is called the molecular mass of the molecule.\xa0Molecular mass - calculation: Generally we use relative atomic masses of atoms for calculating the molecular mass of 1 mole of any molecular or ionic substances.Example: Molecular mass of H2SO4Atomic mass of Hydrogen = 1\xa0Atomic mass of sulphur = 32Atomic mass of oxygen = 16Molecular mass of\xa0H2SO4 = 2(Atomic mass of Hydrogen) + 1 (Atomic mass of sulphur) + 4 (Atomic mass of oxygen)\xa0= 2×1 + 32 + 4× 16 = 98 u. | |