stoichiometry Calculations

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 ratio?

Back

A mole ratio is a ratio that relates the amounts in moles of any two compounds involved in a chemical reaction.

Front

How do you determine the mole ratio from a balanced equation?

Back

The mole ratio can be determined by looking at the coefficients of the balanced chemical equation.

Front

What is the molar mass of NaCl?

Back

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

Front

How many grams are in 1 mole of H2O?

Back

1 mole of H2O (water) has a mass of approximately 18.02 grams.

Front

What is the balanced equation for the combustion of hydrogen?

Back

2H2 + O2 → 2H2O.

Front

If 2 moles of H2 react with O2, how many moles of H2O are produced?

Back

2 moles of H2 will produce 2 moles of H2O.

Front

What is the significance of the coefficients in a balanced equation?

Back

Coefficients indicate the number of moles of each substance involved in the reaction.

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.

Front

What is the molar mass of O2?

Back

The molar mass of O2 (oxygen gas) is approximately 32.00 g/mol.