The half-life of Zn-71 is 2.4 minutes. If one had 100.0 g at the beginning, how many grams would be left after 7.2 minutes has elapsed?
Question 3
3.
The half-life of Zn-71 is 2.4 minutes. If one had 100.0 g at the beginning, how much sample would be left after 3 half-lives?
Question 4
4.
Barium-122 has a half-life of 2 minutes. A fresh sample weighing 80 g was obtained. If it takes 10 minutes to set up an experiment using barium-122, how much barium-122 will be left when the experiment begins?
Question 5
5.
The half-life of strontium-90 is 25 years. How much strontium-90 will remain after 100 years if the initial amount is 4.0 g?
Question 6
6.
If the half-life of uranium-232 is 70 years, how many half-lives will it take for 10 g of it to be reduced to 1.25 g?
Question 7
7.
What is the half-life of Iodine-131?
Question 8
8.
If one-fourth of a sample of carbon-14 is remaining then how many half-lives have passed?
Question 9
9.
Why do some elements have half-lives?
Question 10
10.
If one has 12 kg of Polonium after two half-lives have passed, how much Polonium did you start with?