The amount of a radioactive isotope that remains after two half-lives have passed is
A) 98%.
B) 75%.
C) 50%.
D) 25%.
Correct Answer:
Verified
Q31: Plants incorporate carbon as long they live.Once
Q32: Nitrogen-13 has a half-life of 10 minutes.How
Q33: Nitrogen-13 has a half-life of 10 minutes.How
Q34: The process of electron capture can be
Q35: Phosphorus-30 decays by positron emission.The product is
A)silicon-30.
B)phosphorus-29.
C)sulfur-30.
D)sulfur-29.
Q37: The process of alpha decay results in
Q38: In carbon-14 dating,
A)the radioactivity of carbon is
Q39: Exposure to radioactive material is considered safe
Q40: A piece of fossilized wood has a
Q41: The medical application of cobalt-60 is
A)brain scans.
B)bone
Unlock this Answer For Free Now!
View this answer and more for free by performing one of the following actions
Scan the QR code to install the App and get 2 free unlocks
Unlock quizzes for free by uploading documents