Empirical and Molecular

What is the empirical formula of a molecule containing 18.7% of Lithium, 16.3% of Carbon and 65.0% of oxygen?

• CO₂Li₃

• Li₂CO₃

• Li₃CO₂

• LiCO₅

Tags

NGSS.HS-PS1-7

What is the empirical formula for C₄H₆?

• CH

• CH₃

• C₂H₃

• C₄H₆

Tags

NGSS.MS-PS1-1

A formula that shows the smallest whole-number mole ratio of the elements of a compound, and may or may not be the same as the actual molecular formula.

• Empirical Formula

• Molecular Formula

• Stoichiometry

• Chemical Reaction

Gives the actual number of atoms of each element in a molecule of a compound.

• Empirical Formula

• Molecular Formula

• Stoichiometry

• Chemical Reaction

A compound containing 92.3 percent carbon and 7.7 percent hydrogen. What is the empirical formula?

• CH

• CH₂

• C₂H

• C₂H₂

An empirical formula:

• is a formula that calculates the coefficients of a compound in a balanced equation.

• is the simplest whole-number ratio of moles of elements in the compound.

C₂H₄ What is the empirical formula?

• CH

• CH₂

• C₄H₂

• C₂H₄

P₃O₄ What is the empirical formula?

• PO

• P₃O₄

• P₄O₃

Tags

NGSS.MS-PS1-1

Find the empirical formula for a compound which contains 32.8% chromium and 67.2% chlorine.

• CrCl

• CrCl₃

• Cr₃Cl

• Cr₂Cl₆