Chemistry, 16.10.2019 19:30, robbyd47

Decomposition of radium. radium decomposes at a rate proportional to the quan- if at the end of 20 years approximatelr tity present. 1% of the original quantity has decomposed, how long will it take for one-half of the original1 quantity to decompose?

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Decomposition of radium. radium decomposes at a rate proportional to the quan- if at the end of 20 y...