Copper(II) nitrate decomposes upon heating to form copper(II) oxide, nitrogen dioxide gas, and oxygen gas. If 1.0 mole of copper(II) nitrate decomposes, how many moles of nitrogen dioxide would be formed?

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  1. Cu(NO3)2 --> CuO + NO2 + O2 unbaslanced
    now balance
    2Cu(NO3)2 --> 2CuO + 4NO2 + O2
    has 2 Cu
    has 4 N
    has 12 O good

    so 4 mols NO2 for each 2 mols Cu(NO3)2
    so twice as many
    so 2

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