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Chemistry Forums for Students => Undergraduate General Chemistry Forum => Topic started by: TomatoNinja on September 18, 2019, 12:55:53 PM

Title: Need help solving this problem
Post by: TomatoNinja on September 18, 2019, 12:55:53 PM

Rubidium-86 (86Rb) undergoes beta decay. A 9.52 x 10^−5 mol sample of 86Rb emits 8.87
x 10^16 beta particles in one hour. Calculate the half-life (in hours) for 86Rb

Title: Re: Need help solving this problem
Post by: chenbeier on September 18, 2019, 02:22:34 PM

First show your own attempt.

What are the formulas for calculation of half life time.

Hint how many atoms in the sample and how many atoms represent the ß-particles.