calculate the molecular mass of Na2co3 at mass of a na=23,c=12,o=16???
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The correct answer is 106 u.
- The formula unit mass of a substance is the sum of the atomic masses of all the atoms in the formula unit of an ionic compound.
- Here, it given that mass of a na=23,c=12 and o=16.
- So, formula unit mass of Na₂CO₃ = 2Na + 1C + 3O
- Formula unit mass of Na₂CO₃ = 2 × 23 + 1 × 12 + 3 × 16 =46+ 12+ 48 = 106
- So, the Molecular mass of Na₂CO₃ is 106 u.
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