Empirical Mole Calculation

Moles - Empirical & Molecular Formula

Multiple Choice

A formula with the lowest whole # ratio of elements in a compound is called

• Molecular Formula

• Chemical Formula

• Empirical Formula 

• Distance Formula

Multiple Choice

Which of the following is considered an empirical formula?

• CH₃COOH

• C₆H₁₂O₆

• H₂O

Multiple Choice

Which pair has the same empirical formula?

• NaCrO₄ and Na₂Cr₂O₇

• C₂H₄O₂ and C₆H₁₂O₆

• C₃H₆O₃ and C₂H₆O₂

• CH₄ and C₂H₆

Multiple Choice

Which one is the empirical formula?

C₄H₆

• CH

• CH₃

• C₂H₃

• C₄H₆

Multiple Choice

The molecular and empirical formula of a compound are __________ the same.

• always

• sometimes

• never

• one and

Multiple Choice

If black ball represents carbon (C) atom and white balls represent hydrogen (H) atoms. What is the molecular formula of the diagram shown?

• CH

• CH₄

• C₂H₄

• C₄H₄

Multiple Choice

Do the diagrams have the same empirical formula?

• Yes

• No

Multiple Choice

What is the molecular formula if the empirical formula is CH₂O and the molecular molar mass is 180.18?

• CH₂O

• C₂H₄O₂

• C₄H₈O₄

• C₆H₁₂O₆