Basic StoichiometryStoichiometry is the measurement of _________ __________. It is useful

because it allows us to predict quantities involved in chemical

reactions before we carry them out in the lab. In order to solve stoichiometric problems you need to be able to do a

few different tasks.

You must have a _________ _________ ________ to be

successful in solving stoichiometric problems.

• To write a balanced chemical equation, you must be able to recognize the _________________ that will occur, based on the reactants. This, of course, demands knowledge of both molecular and ionic compounds. If you are still struggling with these things, you must address them before you can be successful with stoichiometry.

You must have a balanced chemical equation to be

successful in solving stoichiometric problems.

• Sample Problem: How many liters of Carbon Dioxide (@STP) are produced when I combust 72 grams of Propane (C3H8)?

Convert your given to ______.

• Read the problem. Identify your given. Your given will include a quantity of units of a substance. Use the proper relationships to make the conversion to _______. If your given is already in _______, you may skip this step.

Make a _________________ from the balanced chemical equation. • Read the problem. Identify your wanted.

It will include units of a substance, but not the quantity.

Convert to desired units.

• If the desired units are moles, you may skip this step.

Basic Stoichiometry• You must have a balanced chemical

equation to be successful in solving stoichiometric problems.

• Convert your given to ________.

• Make a _________________ from the balanced chemical equation.

• Convert to __________________.

Mole Map

Mole MoleMass Mass

Volume Volume

Number of particles

Number of particles

GIVEN DESIRED

Avogadro’s number

Avogadro’s number

Molar mass

Molar mass

Molar volume

Molar volume

Mole

Ratio

Desired

GivenDivide by constant

Multiply by constant