ch42-p082 - 82. (a) The rate at which Radium-226 is...

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( )( )( ) () ( ) ( ) Rn Ra 3 1/2 9 Rn Rn Ra Ra 3.82d 1.00 10 g 222u 6.42 10 g. 1600y 365d/y 226u T m MM Tm ⎛⎞ × == = × ⎜⎟ ⎝⎠ 82. (a) The rate at which Radium-226 is decaying is RN T M m F H G I K J F H I K = × × λ ln ln . . / . .. / 2 210 0 60 2 1 0 1600 315 10 226 366 10 12 23 7 7 af a f ch a fc h a f mg mol ys / y g / m o l s 1 The activity is
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