Question

Empirical formula of a compound x(molar mass = 78 mol.1) ch. Write its molecular formula.

Answer 1

Hi there,

☆ Given

■ Empirical formula = CH

■ The molar mass of empirical is 12+1

= 13 g

■ The molar mass of molecular formula = 78 g

◇ To find the number of empirical units divid the molecular mass ÷ empirical mass

☆ no. Of units = 78 ÷ 13 = 6

So

☆ the molecular formula is 6×(CH)

C6H6

♡ Hope the answer is helpful

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