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Examples from NCERT Book
Examples from NCERT Book
Last updated at June 25, 2021 by Teachoo
Example 3.1 (a) Calculate the relative molecular mass of water (H2O). Atomic mass of Hydrogen = 1 u Atomic mass of Oxygen = 16 u Relative molecular mass of water (H2O) = 2 × Atomic Mass of Hydrogen + 1 × Atomic Mass of Oxygen = 2 × 1 + 1 × 16 = 18 u Example 3.1 (b) Calculate the molecular mass of HNO3 Atomic mass of Hydrogen = 1 u Atomic mass of Nitrogen = 14 u Atomic mass of Oxygen = 16 u Relative molecular mass of HNO3 = Atomic Mass of Hydrogen + Atomic Mass of Nitrogen + 3 × Atomic Mass of Oxygen = 1 + 14 + 3 × 16 = 1 + 14 + 48 = 63 u