Stoichiometry, Molarity and Dilutions Review

Front

What is stoichiometry?

Back

Stoichiometry is the branch of chemistry that deals with the calculation of reactants and products in chemical reactions based on the conservation of mass.

Front

Define molarity.

Back

Molarity (M) is a measure of concentration defined as the number of moles of solute per liter of solution.

Front

What is the formula for calculating molarity?

Back

M = moles of solute / liters of solution.

Front

What is the dilution formula?

Back

The dilution formula is V₁M₁ = V₂M₂, where V is volume and M is molarity.

Front

What is an empirical formula?

Back

An empirical formula represents the simplest whole-number ratio of atoms in a compound.

Front

What is the difference between a compound and a mixture?

Back

A compound is a substance formed when two or more elements chemically bond, while a mixture is a combination of two or more substances that retain their individual properties.

Front

What is a solution?

Back

A solution is a homogeneous mixture of two or more substances, where one substance (the solute) is dissolved in another (the solvent).

Front

Identify the solute and solvent in a saltwater solution.

Back

In a saltwater solution, salt is the solute and water is the solvent.

Front

How do you calculate the mass of a substance from moles?

Back

Mass = moles × molar mass.

Front

What is the molar mass of CaCl₂?

Back

The molar mass of CaCl₂ is approximately 110.98 g/mol.