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17 May, 18:15

An industrial process makes calcium oxide by decomposing calcium carbonate. Which of the following is NOT needed to calculate the mass of calcium oxide that can be produced from 4.7 kg of calcium carbonate? Question 1 options: molar masses of the reactants the volume of the unknown mass the balanced chemical equation molar masses of the product

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  1. 17 May, 20:27
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    Answer: the volume of the unknown mass

    Explanation:

    The other choices, molar masses of the reactants, the balanced chemical equation, and the molar masses of the product, are essential for the realization of stoichiometric calculations.

    The balanced chemical equations tells the mole ratio of reactants (calcium carbonate) and products (calcium oxide and carbon dioxide).

    The molar masses of reactants are used to convert between mass (grams) and moles.

    The volume of the unknown mass is not needed when you are working only masses and moles since the relation is given by the molar masses. The volume is required when you are working with gas pressures, molarity contentrations or the information has to be worked from density measures.
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