3. Chemical Reactions

What is the empirical formula of a compound that contains only iron and oxygen and is 22.27% oxygen?

In general, what does a subscript (such as the "2" in H₂) tell you about the molecule?

How many atoms of oxygen are in the chemical formula 2Ca(ClO₂)₂?

Some of the formulas below could be either molecular or empirical formulas; however, some could only be molecular formulas. Which of the following formulas must be molecular formulas? Select all that apply.

Which of the following is an empirical formula?

A 4.08 g sample of a compound of nitrogen and oxygen contains 3.01 g of oxygen. What is the empirical formula?

What is the empirical formula of a compound that contains 75% Ag and 25% Cl by mass?

Determine the empirical formula for a compound that is 36.86% N and 63.14% O by mass.

Calculate the empirical formula for each compound

What is the empirical formula of a compound that contains 85 Ag and 15 F by mass?

Which pair consists of a molecular formula and its corresponding empirical formula?

What is the simplest whole-number ratio of atoms in a molecule or formula unit called?

Determine the empirical formula for a compound that contains C, H and O. It contains 52.14% C and 34.73% O by mass.

What is the empirical formula for a compound if a sample contains 1.0 g of S and 1.5 g of O?

A molecule of a certain compound contains two nitrogen atoms and four oxygen atoms. What is the molecular formula for this compound?