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1 May, 07:51

How many grams are there in 2.00 moles of copper (ii) oxide

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  1. 1 May, 10:31
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    Answer: 159 grams

    Explanation:

    Copper (ii) oxide has the chemical formula CuO.

    Now given that:

    Mass of CuO in grams = ? (let unknown value be Z)

    Number of moles = 2.00 moles

    Molar mass of CuO = ?

    For the molar mass of CuO: Atomic mass of Copper = 63.5g; Oxygen = 16g

    = 63.5g + 16g

    = 79.5 g/mol

    Apply the formula:

    Number of molecules = (mass in grams/molar mass)

    2.00 moles = (Z / 79.5 g/mol)

    Z = 79.5 g/mol x 2.00 moles

    Z = 159g

    Thus, there are 159 grams in 2.00 moles of copper (ii) oxide
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