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 1.21 pounds of butane (fuel value is 10.85 kcal/g) is used to heat 123.0 kg of water at an initial temperature of 18.0 °C, what is the final temperature?

Question

Physics

Fatima Wu

9 May, 16:33

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 1.21 pounds of butane (fuel value is 10.85 kcal/g) is used to heat 123.0 kg of water at an initial temperature of 18.0 °C, what is the final temperature?

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Anna Schroeder · Answer 1

Convert 1.29 lbs C4H10 to grams = ?

Then? g x 10.85 kcal/g = q kcal or 1000q cal.

1000q = mass H2O x specific heat H2O x (Tf-Tinitial)

Solve for Tf.

I estimate the answer is about 71 C