chemistry

Q3:
In the combustion reaction of 149g of propane(C3H8) with excess oxygen, what volume of carbon dioxide(CO2) is produced at STP?
(note: balance the reaction first)
C3H8 + O2  3CO2 + H2O

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  3. 31
asked by b
  1. C3H8 + 5O2  3CO2 + 4H2O

    mols C3H8 = grams/molar mass
    Using the coefficients in the balanced equation, convert mols C2H8 to mols CO2.
    Now convert mols CO2 to L remembering that 1 mol occupies 22.4 L OR you can use PV = nRT and solve for V in L../

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    posted by DrBob222

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