how many grams of CO2 are produced when 88 grams of O2 are reacted with an excess of butane?

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  1. 2C4H10 + 13O2 ==> 8CO2 + 10H2O

    mols O2 = grams/molar mass
    Using the coefficients in the balanced equation, convert mols O2 to mols CO2.
    Now convert mols CO2 to grams. g = mols x molar mass

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