Chemistry

If I have 2.5L of propane at STP, how many grams of water can be produced by this combustion?

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  1. I know STP is 22.4 L, but I need more help

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  2. so, you have 2.5/22.4 = 0.1116 moles of propane
    Now look at the reaction equation for the combustion to see how many moles of water that will produce
    then convert that to grams

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    oobleck
  3. Ok so this is the equation:

    C3H8 + 5O2 = 3CO2 + 4H2O

    What do I have to do next?

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  4. So you have 0.1116 mols propane. According to your balanced equation, 1 mol C3H8 will produce 4 mols H2O. That means 0.1116 mols C3H8 will produce .......mols H2O.

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    DrBob222
  5. Ahh, I get it now thank you

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