Unit 6/Stoichiometry 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

What is a mole in chemistry?

Back

A mole is a unit of measurement used to express amounts of a chemical substance, defined as exactly 6.022 x 10^23 particles (atoms, molecules, ions, etc.).

Front

How do you calculate the number of molecules from moles?

Back

To calculate the number of molecules from moles, multiply the number of moles by Avogadro's number (6.022 x 10^23).

Front

What is the formula to calculate percent yield?

Back

Percent yield = (Actual yield / Theoretical yield) x 100%.

Front

What is a synthesis reaction?

Back

A synthesis reaction is a type of chemical reaction where two or more simple substances combine to form a more complex product.

Front

What is a double replacement reaction?

Back

A double replacement reaction is a type of chemical reaction where two compounds exchange ions or bonds to form two new compounds.

Front

How do you convert moles to grams?

Back

To convert moles to grams, multiply the number of moles by the molar mass of the substance (in grams per mole).

Front

What is the molar mass of NaCl?

Back

The molar mass of NaCl (sodium chloride) is approximately 58.44 g/mol.

Front

What is the theoretical yield?

Back

The theoretical yield is the maximum amount of product that can be produced from a given amount of reactants, calculated based on stoichiometric ratios.

Front

What is an actual yield?

Back

The actual yield is the amount of product that is actually obtained from a chemical reaction, which is often less than the theoretical yield.