Empirical Formula Calculations

A compound is 16.3% C, 32.1% Cl and 51.6% F by mass. What is the empirical formula?

• C₃Cl₂F₆

• C_1.5Cl F₃

• C₂Cl₃F₆

• C₃Cl₆F₂

Tags

NGSS.HS-PS1-1

Determine the empirical formula for a compound that is 23.3% Co, 25.3% Mo and 51.4% Cl by mass. What is the empirical formula?

• Co Mo Cl₄

• Co₃Mo₂Cl₁₁

• Co₂MoCl₃

• Co₂MoCl₉

Tags

NGSS.HS-PS1-7

3.245 g of a compound containing titanium and chlorine is separated into elements. If 0.819 g of the sample is titanium, what is the empirical formula of the compound? HINT: find the mass of chlorine first.

• TiCl₄

• TiCl

• TiCl₃

• TiCl₂

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

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

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.

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

• CrCl

• CrCl₃

• Cr₃Cl

• Cr₂Cl₆

A compound is 40% sulfur and 60% oxygen by mass. What is the empirical formula?

Determine the empirical formula for a compound that is 27.3% carbon and 72.7% oxygen by mass.

A compound is found to contain 36.8% nitrogen and 63.2% oxygen by mass. What is the empirical formula?

Tags

NGSS.HS-PS1-2

A sample of a compound contains 4.8 g of carbon and 1.2 g of hydrogen. What is the empirical formula?