Stoichiometry Practice Flashcard

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 Law of Conservation of Mass?

Back

The Law of Conservation of Mass states that mass is neither created nor destroyed in a chemical reaction; the total mass of reactants equals the total mass of products.

Front

Define Molar Mass.

Back

Molar mass is the mass of one mole of a substance, typically expressed in grams per mole (g/mol).

Front

What is an Empirical Formula?

Back

An empirical formula is the simplest whole-number ratio of atoms of each element in a compound.

Front

How do you calculate moles from grams?

Back

Moles = mass (g) / molar mass (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 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 the moles of another substance in a balanced chemical equation.

Front

How many moles of water are produced from 2 moles of hydrogen gas?

Back

According to the reaction 2H₂ + O₂ → 2H₂O, 2 moles of H₂ produce 2 moles of H₂O.

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

How do you determine the limiting reactant?

Back

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