# Radioactive Decay Rate

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 8 months ago

## Related Problems

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

B. Find the rate constant

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

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

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?

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?