chemistry

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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