Question

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Yttirum-90 has a half-life of 64.10 hours. Given an initial mass of 570 grams of the sample, how much of the samples, in grams, will remain after 112 hours?

Answer 1

foly 64.10 hours 0 NC) = 0.6936 é(-0.com No AL at t= 112 hours. (-0.693x12 NU = 570 l Gaolo =sroe -(1-21) = 570 y 0-290 169.974grans NEC) As war 2) Peak T - 2.808x103 * Peak 2.828410-3 3920 be 7 Peak = 7.3928 X10 -> m dah f 3x108 7.39237107 0.40 soo x 10 - IS f 14 HZ - 4.0580 X10 Aswer CS SCANMEA with Cam Scanner