SOLUTION: The half-life of radioactive iodine 131 is approximately 8.3 days.
a) Find an exponential decay model for iodine 131.
b) following the fukushima Nuclear power plant disaster in
Algebra.Com
Question 1030630: The half-life of radioactive iodine 131 is approximately 8.3 days.
a) Find an exponential decay model for iodine 131.
b) following the fukushima Nuclear power plant disaster in 2011, radioactive iodine 131 was released into the atmosphere. How long would it have taken for 1500 grams of the iodine to decrease to 100 grams?
Found 2 solutions by josgarithmetic, Boreal:
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
This video will give the instruction needed:
Exponential Decay, example and instruction
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
P=po*exp(-kt)
p= 1/2 po, because it is half as much
therefore, 1/2=exp(-kt)
ln both sides
ln(1/2)=-8.3k
0.693/8.3=k
do without rounding until end
0.0835=k
Here, you want (1/15) to be the ratio.
t is not known, but k is
therefore, (1/15)=exp(-0.0835*t)
ln both sides
t=32.43 days
RELATED QUESTIONS
Iodine-131 is used to find leaks in water pipes. It has a half life of 8.14 days. Write... (answered by stanbon)
Iodine-131 is a radioactive material used to treat a certain types of cancer. Iodine-131... (answered by ankor@dixie-net.com)
Use the exponential decay equation given below, where A is the amount of a radioactive... (answered by josgarithmetic)
Iodine - 131 is a radioactive isotope used in medicine. Its half-life or decay rate of... (answered by ikleyn)
In 11.4 days a certain amount of iodine - 131 has decayed to (1/√2) of its original... (answered by ikleyn)
A 5000g sample of Iodine-131 decayed into 312.5 grams in 2.025 days. What is the... (answered by Greenfinch)
The decay rate of iodine-131
is 9.6% per day. What is its... (answered by Alan3354)
1.Phosphorus-32 is used to study a plant's use of fertilizer. It has a half life of 14.3... (answered by ankor@dixie-net.com)
please help me to solve the problem-In how many years will a given quantity of Iodine 131 (answered by math_helper)