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17 July, 08:37

Use the equation

2Cu+O2-->2CuO

to find how many grams of copper react to produce 7.00 mol CuO.

Question options:

286

426

445

413

+4
Answers (1)
  1. 17 July, 12:20
    0
    The number of grams of copper reacted is 445 grams

    calculation

    2Cu + O₂ → 2CuO

    from equation above the mole ratio of Cu:CUO is 2:2 = 1:1, therefore the moles of Cu is also = 7.00 moles

    mass=moles x molar mass

    from periodic table the molar mass of Cu = 63.5 g/mol

    mass = 7.00 moles x 63.5 g/mol = 445 grams
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