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9 October, 05:06

What is the molar mass of Na2CO3? 60.0 g/mol 106.0 g/mol 118.0 g/mol 141.0 g/mol

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  1. 9 October, 08:04
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    Answer is: the molar mass od sodium carbonate (Na₂CO₃) is 106.0 g/mol.

    M (Na₂CO₃) = 2 · Ar (Na) + Ar (C) + 3 · Ar (O).

    M (Na₂CO₃) = 2 · 23 + 12 + 3 · 16 · g/mol.

    M (Na₂CO₃) = 46 + 12 + 48 · g/mol.

    M (Na₂CO₃) = 106 g/mol; molar mass of sodium carbonate.

    Ar is relative atomic mass (the ratio of the average mass of atoms of a chemical element to one unified atomic mass unit) of an element.
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