Chemistry 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 the amount of a substance, defined as containing exactly 6.022 x 10²³ particles (atoms, molecules, ions, etc.).

Front

What does a balanced chemical equation represent?

Back

A balanced chemical equation represents the conservation of mass, showing that the number of atoms of each element is the same on both sides of the equation.

Front

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

Back

The mole ratio is determined by the coefficients of the reactants and products in a balanced chemical equation.

Front

What is the mole ratio of H₂ to O₂ in the reaction 2H₂ + O₂ → 2H₂O?

Back

The mole ratio of H₂ to O₂ is 2:1.

Front

In the reaction Ca(OH)₂ + 2 HCl → CaCl₂ + 2 H₂O, what is the mole ratio of HCl to CaCl₂?

Back

The mole ratio of HCl to CaCl₂ is 2:1.

Front

How many moles of O₂ are produced from the decomposition of 2 KClO₃?

Back

From the decomposition of 2 KClO₃, 3 moles of O₂ are produced.

Front

What is the significance of coefficients in a balanced equation?

Back

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

Front

If you have 8 slices of bread and 8 slices of meat, how many sandwiches can you make?

Back

You can make 4 sandwiches with 4 slices of meat left over.

Front

What is the mole ratio of MgO to Fe in the reaction 3 Mg + Fe₂O₃ → 3 MgO + 2 Fe?

Back

The mole ratio of MgO to Fe is 3:2.