Question
a sample of a radioisotope had a mass of 100.0 grams. After exactly 24 days, 6.25 grams remained. The half life of the isotope is _________
Answers
DrBob222
ln(No/N) = kt
No = 100
N = 6.25
t = 24 days.
Solve for k, then substitute into the equation below.
k = 0.693/t<sub>1/2</sub> and solve for t<sub>1/2</sub>
No = 100
N = 6.25
t = 24 days.
Solve for k, then substitute into the equation below.
k = 0.693/t<sub>1/2</sub> and solve for t<sub>1/2</sub>