Discuss how much time is needed for a sample


Discuss how much time is needed for a 5.66-mg sample of 51Cr to decay to 1.30mg if it has a half-life of 27.8 days? Radium-226, which undergoes alpha decay, has a half-life of 1600yr. determine the numbers of alpha particles are emitted in 1.6 min by a 3.9-mg sample of 226Ra?

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Chemistry: Discuss how much time is needed for a sample
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