Stoichiometry--Mixed Problems

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 balanced chemical equation.

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, ensuring the law of conservation of mass is followed.

Front

What is a mole ratio?

Back

A mole ratio is a ratio of the coefficients of any two substances in a balanced chemical equation, used to convert between moles of reactants and products.

Front

How do you calculate the number of moles from grams?

Back

To calculate moles from grams, use the formula: Moles = Mass (g) / Molar Mass (g/mol).

Front

What is the molar mass of water (H2O)?

Back

The molar mass of water is approximately 18.02 g/mol.

Front

How many moles of water are needed to produce 1 mole of glucose (C6H12O6)?

Back

According to the equation CO2 + H2O → C6H12O6 + O2, 6 moles of water are needed to produce 1 mole of glucose.

Front

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

Back

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

Front

What is the relationship between moles and volume for gases at STP?

Back

At standard temperature and pressure (STP), 1 mole of any gas occupies 22.4 liters.

Front

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

Back

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

Front

What is the formula for calculating the volume of gas produced in a reaction?

Back

Volume (L) = Moles of gas × 22.4 L/mol (at STP).