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.

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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

How do you balance a chemical equation?

Back

To balance a chemical equation, adjust the coefficients of the reactants and products to ensure that the number of atoms of each element is the same on both sides of the equation.

Front

What is a mole in chemistry?

Back

A mole is a unit of measurement in chemistry that represents 6.022 x 10^23 particles (atoms, molecules, ions, etc.).

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How do you convert grams to moles?

Back

To convert grams to moles, divide the mass of the substance (in grams) by its molar mass (in grams per mole).

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What is 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 the significance of coefficients in a balanced equation?

Back

Coefficients indicate the relative number of moles of each substance involved in the reaction, allowing for stoichiometric calculations.

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

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The limiting reactant is the reactant that is completely consumed first in a reaction, limiting the amount of product formed. It can be determined by comparing the mole ratios of the reactants used.

Front

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

Back

At standard temperature and pressure (STP), one mole of an ideal gas occupies 22.4 liters.

Front

How do you calculate the mass of a product formed in a reaction?

Back

To calculate the mass of a product, use the balanced equation to find the mole ratio between the reactant and product, convert moles of the reactant to moles of the product, and then convert moles of the product to grams using its molar mass.