Chemistry 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 a Balanced Equation?

Back

A balanced equation is a chemical equation in which the number of atoms for each element is the same on both sides of the equation, ensuring the law of conservation of mass is followed.

Front

What is the Mole Ratio?

Back

The mole ratio is the 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 determine the Limiting Reagent?

Back

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

Front

What is an Excess Reagent?

Back

An excess reagent is a reactant that remains after a chemical reaction has gone to completion; it is not completely consumed.

Front

What is the formula to calculate moles?

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Moles = Mass (g) / Molar Mass (g/mol).

Front

How many moles of water are produced from 4 moles of hydrogen in the reaction 2H2 + O2 → 2H2O?

Back

4 moles of water are produced.

Front

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

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Coefficients indicate the number of moles of each substance involved in the reaction, which is essential for stoichiometric calculations.

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What is the first step in solving a stoichiometry problem?

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The first step is to write a balanced equation for the reaction.

Front

How do you convert grams to moles?

Back

To convert grams to moles, divide the mass of the substance by its molar mass.