Empirical Formula Quiz

What tools are necessary to solve the empirical formula problem presented by Mr. Cozzi?

• Ruler, compass, and knowledge of geometry

• Calculator, periodic table, and knowledge of moles and molar mass

• Periodic table, compass, and knowledge of physics

• Calculator, ruler, and knowledge of algebra

What is the first step in determining the empirical formula from percentage composition?

• Multiply ratios to get whole numbers

• Convert percentages to grams

• Find the smallest mole ratio

• Convert grams to moles

After converting grams to moles, what is the next step in finding the empirical formula?

• Add all moles together

• Find the smallest mole ratio

• Convert moles to percentages

• Multiply by the molar mass

How do you adjust mole ratios to ensure they are whole numbers?

• Divide by the largest mole value

• Multiply by a common factor

• Subtract the smallest mole value

• Add a constant to each ratio

What is the empirical formula determined in the video?

• C2H6O

• C3H8O2

• C3H8O

• C4H10O