A compound has an empirical formula of CH₂. An independent analysis gave a value of 70 g for its molar mass. What is the molecular formula of the compound?

Question

Quizplus · Accepted Answer

The empirical formula CH₂ has a molar mass of 14 g/mol (12 for C and 2 for H). The molecular formula must be a multiple of the empirical formula. 70 g/mol divided by 14 g/mol is 5, so the molecular formula is C₅H₁₀.

A Compound Has an Empirical Formula of CH2

A Compound Has an Empirical Formula of CH₂