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which information must be known about a compound to find the molecular formula from the empirical formula​

User Asif Khan
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Answer:

Molecular mass or vapor density

Step-by-step explanation:

The empirical formula is the simplest formula of a compound. The molecular formula expresses the exact formula of the compound. To derive the molecular formula, we need information about its molecular mass or if given the vapor density.

(Empirical Formula)n = Molecular formula ------(i)

n = number of repeating units of the empirical formula present in one mole of the molecule

also, (molar mass of empirical formula)n = molar mass of compound

From here, we can find n and insert in (i) above.

User Buntylm
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