The Energy Information Administration of the U.S.

Chapter 4, Problem 10

(choose chapter or problem)

The Energy Information Administration of the U.S. Department of Energy estimates that in 2010 the world energy use will be 470.8 quadrillion Btu (British thermal units), where 1 Btu 0.000 293 1 kWh (kilowatt-hours.) a. Express 470.8 quadrillion Btu and 0.000 293 1 kWh in scientific notation. b. How many kilowatt-hours are there in 470.8 quadrillion Btu? Give your answer in scientific notation.

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