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 the mole concept?

Back

The mole is a unit of measurement in chemistry that represents 6.022 x 10^23 particles (atoms, molecules, ions, etc.). It allows chemists to count quantities of substances.

Front

How do you calculate molar mass?

Back

Molar mass is calculated by summing the atomic masses of all atoms in a molecule, expressed in grams per mole (g/mol).

Front

What is 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 law of conservation of mass.

Front

What is the mole ratio in a chemical reaction?

Back

The mole ratio is the ratio of moles of one substance to moles of another substance in a balanced chemical equation.

Front

How do you determine the limiting reactant?

Back

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

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, which is essential for stoichiometric calculations.

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 (grams = moles x molar mass).

Front

What is the formula for calculating percent yield?

Back

Percent yield = (actual yield / theoretical yield) x 100%.

Front

What is the difference between empirical and molecular formulas?

Back

The empirical formula shows the simplest whole-number ratio of elements in a compound, while the molecular formula shows the actual number of atoms of each element in a molecule.