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In Ray Bradbury's novel Fahrenheit 451, books are banned. Fire departments respond not to put out fires but to burn books, which combust at 451°F. Suppose the fire department decides to use the burning books to heat water for afternoon tea. This is done with a burner that transfers 75% of the  heat from the burning book to 500 mL of water on top of the stove. The water is initially at 15°C and needs to be raised to 100°C. How many copies of a 500-page book would need to be burned if the energy released is combustion is 5 J/page?

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