- The chemical formula for anhydrous sodium carbonate is Na₂CO₃. - The formula mass is the sum of the atomic masses of all atoms in the formula unit. - Atomic masses given: Sodium (Na) = 23 u, Carbon (C) = 12 u, Oxygen (O) = 16 u. - Formula mass of Na₂CO₃ = (2 × Atomic mass of Na) + (1 × Atomic mass of C) + (3 × Atomic mass of O) - Formula mass = (2 × 23 u) + (1 × 12 u) + (3 × 16 u) - Formula mass = 46 u + 12 u + 48 u = 106 u.
What is the formula mass of anhydrous sodium carbonate? (Given that the atomic masses of sodium, carbon and oxygen are 23 u, 12 u and 16 u respectively)
Asked in UPSC NDA 2 2018 · Topic: Inorganic Chemistry (Chemical Bonding and Molecular Structure)
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