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30 August, 12:47

Calcium carbonate, when heated, forms calcium oxide and carbon dioxide. 100grams of calcium carbonate will produce 56grams of calcium oxide. How many grams of carbon dioxide will it produce? Show working out

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  1. 30 August, 14:52
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    It will produce 44 grams of carbon dioxide

    Explanation:

    Step 1: Data given

    MAss of CaCO3 = 100 grams

    Molar mass of CaCO3 = 100.09 g/mol

    Mass of CaO produced = 56 grams

    Molar mass of CaO = 56.08 g/mol

    Step 2: The balanced equation

    CaCO3 → CaO + CO2

    Step 3: Calculate moles CaCO3

    Moles CaCO3 = mass CaCO3 / molar mass CaCO3

    Moles CaCO3 = 100 grams / 100.09 g/mol

    Moles CaCO3 = 1.00 moles

    Step 4: Calculate moles CaO

    Moles CaO = 56 grams / 56.08 g/mol

    Moles CaO = 1.00 moles

    Step 5: Calculate moles CO2

    For 1 mol CaCO3 we'll have 1 mol 1 mol CaO and 1 mol CO2

    Step 6: Calculate mass CO2

    Mass CO2 = moles CO2 * molar mass CO2

    Mass CO2 = 1.00 moles * 44.0 g/mol

    Mass CO2 = 44 grams

    It will produce 44 grams of carbon dioxide
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