Law of Conservation of Mass and Chemical Equations

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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; the total mass of reactants equals the total mass of products.

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What are reactants in a chemical equation?

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Reactants are the starting substances in a chemical reaction that undergo change to form products.

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What are products in a chemical equation?

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Products are the substances formed as a result of a chemical reaction.

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What does a subscript in a chemical formula indicate?

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A subscript indicates the number of atoms of an element in a molecule.

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How do you calculate the total mass of reactants in a chemical reaction?

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The total mass of reactants is calculated by adding the masses of all reactants before the reaction occurs.

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If the total mass of products is 84 g, what is the total mass of reactants?

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According to the Law of Conservation of Mass, the total mass of reactants must also be 84 g.

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What is the significance of balancing a chemical equation?

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Balancing a chemical equation ensures that the number of atoms for each element is the same on both sides of the equation, reflecting the conservation of mass.

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What is the role of coefficients in a chemical equation?

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Coefficients indicate the number of molecules or moles of a substance involved in a reaction.

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How do you determine the mass of a reactant if the mass of products is known?

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You can determine the mass of a reactant by subtracting the known masses of other reactants from the total mass of products.

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What is the formula for calculating the mass of a compound?

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The mass of a compound can be calculated by summing the masses of its constituent elements multiplied by their respective subscripts.