Question 1062588
{{{y=p*e^(-kt)}}}


{{{1/2=1*e^(-k*3.2)}}}

{{{ln(1/2)=ln(e^(-3.2k))}}}

{{{ln(1/2)=-3.2k}}}

{{{ln(2)=3.2k}}}

{{{highlight_green(k=ln(2)/3.2)}}}






{{{t=10}}}.


{{{y=1*e^(-(ln(2)/3.2)*10)}}}


{{{y=e^(-ln(2)*10/3.2)}}}


{{{y=0.1146}}}


11.5% sample remains after 10 minutes.