Practice flashcard: Stoichiometry

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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 a mole in chemistry?

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

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What does a balanced chemical equation represent?

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A balanced chemical equation represents the conservation of mass, showing that the number of atoms of each element is the same on both sides of the equation.

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How do you determine the molar mass of a compound?

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To determine the molar mass of a compound, sum the atomic masses of all the atoms in its chemical formula.

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What is the molar ratio in a balanced equation?

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The molar ratio is the ratio of the coefficients of the reactants and products in a balanced chemical equation, indicating the proportions in which substances react and are produced.

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What is the formula to calculate the number of moles from mass?

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The formula is: \( \text{moles} = \frac{\text{mass (g)}}{\text{molar mass (g/mol)}} \)

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What is the concept of limiting reactant?

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

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

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To calculate the mass of a product, use the formula: \( \text{mass} = \text{moles of product} \times \text{molar mass of product} \)

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What is yield in a chemical reaction?

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Yield refers to the amount of product obtained from a reaction, often expressed as a percentage of the theoretical yield.

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What is the difference between theoretical yield and actual yield?

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Theoretical yield is the maximum amount of product that can be formed from given reactants, while actual yield is the amount of product actually obtained from the reaction.