Stoichiometry

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

True or False: You must convert grams to moles to do stoichiometry.

Back

True

Front

In the reaction 3 Mg + 1 Fe2O3 → 3 MgO + 2 Fe, what is the ratio of moles of Mg to moles of Fe?

Back

3 mol Mg / 2 mol Fe

Front

What type of reaction is represented by 3Ca + 2AlCl3 → 3CaCl2 + 2Al?

Back

Single replacement

Front

In the reaction 3 Mg + 1 Fe2O3 → 3 MgO + 2 Fe, what is the ratio of moles of MgO to moles of Fe?

Back

3 mol MgO / 2 mol Fe

Front

How many moles of oxygen are produced when 6.7 moles of KClO3 decompose completely in the reaction 2 KClO3 → 2 KCl + 3 O2?

Back

10.1 mol

Front

What is the mole ratio of reactants to products in a balanced chemical equation?

Back

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

Front

Define a balanced chemical equation.

Back

A balanced chemical equation has equal numbers of each type of atom on both sides of the equation, reflecting the conservation of mass.

Front

What is the purpose of using coefficients in a chemical equation?

Back

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

Front

What is the significance of the Law of Conservation of Mass in stoichiometry?

Back

The Law of Conservation of Mass states that mass is neither created nor destroyed in a chemical reaction, which is fundamental for balancing equations.