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college chemistry

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How many megajoules are released when 9.0 gal of gasoline burns.
how do I start to do this problem, and what are the steps to get there.
thank you

  • college chemistry -

    1. Write and balance the equation.
    2. Use density gasoline to convert 9.0 gallons to grams.
    3. Look up the heat of combustion or calculate it from the delta H formation values.
    4. heat combustion x (grams gasoline/molar mass gasoline).

    Post your work or supply details (numbers) if you run into trouble.

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