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chemistry/ stioichiometry

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Cu2S + O2- 2Cu +SO2

when 10.2 mol Cu2S react with oxygen, how many moles of Cu are formed?

  • chemistry/ stioichiometry -

    Look at the equation. The coefficients are not there because they look pretty.
    1 mol Cu2S yields 2 mols Cu;
    2 mol Cu2S yields 4 mols Cu;
    5 mol Cu2S yields 10 mols Cu;
    10 mol Cu2S yields 20 mols Cu.
    Get the picture?
    So 10.2 mol Cu2S yields ...... mols Cu.

  • chemistry/ stioichiometry -

    so it is 20.4 mols cu???

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