Stoichiometry Practice

Front

What is stoichiometry?

Back

The calculation of reactants and products in chemical reactions based on the conservation of mass.

Front

What is the molar mass of Ca(OH)₂?

Back

74.09 g/mol

Front

How do you determine the limiting reactant in a chemical reaction?

Back

The limiting reactant is the substance that is completely consumed first, limiting the amount of product formed.

Front

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

Back

2:2 or 1:1

Front

How many grams of O₂ are produced from 12 moles of NaClO₃?

Back

576 g of O₂ are produced.

Front

What is the molar mass of NaClO₃?

Back

106.44 g/mol

Front

What is the balanced equation for the decomposition of NaClO₃?

Back

2 NaClO₃ → 2 NaCl + 3 O₂

Front

Define a mole in chemistry.

Back

A mole is a quantity that contains 6.022 x 10²³ particles (atoms, molecules, etc.).

Front

What is the purpose of a balanced chemical equation?

Back

To ensure that the number of atoms for each element is the same on both sides of the equation, reflecting the conservation of mass.

Front

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

Back

Coefficients indicate the relative number of moles of each reactant and product involved in the reaction.