Radioactive Decay Rate

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An isotope of phosphorous, $^{32}$ P, is radioactive and undergoes beta decay with a half life of 14.3 days. How long would it take for 99% of a sample of this isotope to decay?

Posted by Dalton Wylde 9 months ago

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The following initial rate data was collected for the reaction, A + 2B $\longrightarrow$ products

B. Find the rate constant

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The following initial rate data was collected for the reaction, 2 NO + O $_2$ $\longrightarrow$ 2NO $_2$

[NO $_2$ ] $^X$ [O $_2$ ] $^Y$

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A $\longrightarrow$ products

t $_\frac{1}{2}$ = 180s

A. What % of A is left unreacted at 900 s?

B. What is the rate at [A] = 0.50 M?

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The half life of uranium-238 is 4.51 x 10 $^9$ years. What is the rate constant? How much uranium-238 is left after 4 half lives if we start with 64 mg?

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