A chemical substance has a half life of 5 years. A chemist currently has 2000 grams of the substance. If the substance remains untouched, after 25 years, how much of the substance will be left?
1 Answer
Apr 29, 2017
after 25 years there would be
Explanation:
Half life refers to the time it takes or half of the substance to decay.
If the half life is 5 years and we begin with 2000 grams, we can create a data list of the decay.
0 years = 2000 grams
5 years = 1000 grams
10 years = 500 grams
15 years = 250 grams
20 years = 125 grams
25 years = 62.5 grams
You can also use the formula