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Discovery of Sulphuric Acid

Calculate the...

Question

Calculate the molar mass of HNO₃
Compare it with its formula unit mass

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Solution

First of all molar mass and formula unit mass are calculated in same way however, formula unit mass is the mass of formula of the compound and it is calculated in ionic compound however molecular mass is calculated in covalent compound.
So, both the masses are same.
The molecular mass of HNO₃ = 1(forH) + 14 (for N) + 3 x 16 (for O) = 63u

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