Stoichiometry

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What is Stoichiometry?

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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?

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The Law of Conservation of Mass states that mass is neither created nor destroyed in a chemical reaction; it is conserved.

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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 10²³ particles (atoms, molecules, ions, etc.).

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How do you convert liters of gas to moles at STP?

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At Standard Temperature and Pressure (STP), 1 mole of an ideal gas occupies 22.4 liters.

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What is the mole ratio in a balanced chemical equation?

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The mole ratio is the ratio of moles of one substance to the moles of another substance in a balanced chemical equation.

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

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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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What is the formula to calculate the mass of a substance from moles?

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

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What is the molar mass of water (H₂O)?

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The molar mass of water (H₂O) is approximately 18.02 g/mol.

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How do you calculate the volume of gas produced in a reaction?

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Use the ideal gas law or stoichiometric calculations based on the balanced equation and the volume of reactants.

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What is the significance of coefficients in a balanced equation?

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Coefficients indicate the number of moles of each substance involved in the reaction and are used to determine mole ratios.