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Chemistry

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The amount of energy released by burning a fuel source, measured in energy per mass, is called the fuel value. If all the energy obtained from burning 1.30 pounds of methane (fuel value is 11.97 kcal/g) is used to heat 122.0 kg of water at an initial temperature of 21.1 °C, what is the final temperature?

  • Chemistry -

    1.30 pounds x 453.6 g/lb = ? grams.
    11.97 kcal/g x ?g = # kcal and that times 1000 = # calories = q
    q = mass H2O in g x specific heat H2O x (Tfinal-Tinitial).
    Subsitute and solv for Tfinal.

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