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13 August, 04:57

Use the equation 2cu+o2=2cuo to find how many miles of copper react to form 3.64 mil cuo

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  1. 13 August, 05:10
    0
    Complete question:

    Use the equation 2Cu+O2 →2CuO, to find how many grams of copper react to produce 3.64 mol CuO.

    Answer:

    grams of Cu = 231.14 grams

    If it is the number of moles

    since both Cu and CuO exist in the reaction as 2 mole each, That means 3.64 moles of CuO will need 3.64 moles of Cu to react.

    Explanation:

    Write and balance the equation of the reactions

    2Cu+O2 →2CuO

    The equation is balanced

    Atomic mass of cu = 63.5 g/mol

    mass of 2Cu in the reaction = 127 grams

    Molar mass of Cuo = 63.5 + 16 = 79.5

    The mass of 2Cuo in the reaction = 2 * 79.5 = 159 grams

    number of moles = mass/molar mass

    we need to convert 3.64 moles to mass (grams)

    3.64 = mass/79.5

    mass = 3.64 * 79.5

    mass of copper oxide = 289.38

    grams

    Since 127 grams of copper give 159 grams of Cuo

    ? grams of copper will give 289.38 grams of Cuo

    cross multiply

    grams of Cu = 289.38 * 127/159

    grams of Cu = 36751.26

    /159

    grams of Cu = 231.14 grams

    If it is the number of moles

    since both Cu and CuO exist in the reaction as 2 mole each, That means 3.64 moles of CuO will need 3.64 moles of Cu to react.
  2. 13 August, 05:26
    0
    Answer;

    3.64 moles

    Explanation;

    From the equation;

    2Cu + O2 → 2CuO

    Mole ratio of Cu : CuO = 2: 2 equivalent to 1: 1

    Moles of CuO = 3.64 Moles

    Therefore;

    moles of Cu will be;

    3.64 * 1 = 3.64 moles

    Moles of Cu = 3.64 moles
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