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the old unit of absorbed radiation dose the roentgen is defined as the dose of radiation which produces 2.1x109 ion pairs in 1 cm3 of air. the energy necessary to produce 1 ion pair is eV where 1 eV = 1.6x10-19 J. given that the absorbed dose unit, the rad, is defined as 10-2 J/kg, and the density of air is 1.29x10-3 g/cm3, how many rad is 1 roentgen?

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11y ago
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Q: How many rad is 1 cm3?
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