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activity |
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activity 1. the number of disintegrations of a radioactive substance in a given unit of time, usually expressed in curies or disintegrations per second 2. a. the capacity of a substance to undergo chemical change b. the effective concentration of a substance in a chemical system. The absolute activity of a substance B, λB, is defined as exp (μBRT) where μB is the chemical potential How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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