You have a sample of a radioactive isotope of an element called "mysterium." The

half life of "mysterium" is 16 days. If you start with a 300 g sample of "mysterium,"

what mass of "mysterium"will remain after 64 days?

Question

Chemistry

Delilah Fields

30 June, 07:13

You have a sample of a radioactive isotope of an element called "mysterium." The

half life of "mysterium" is 16 days. If you start with a 300 g sample of "mysterium,"

what mass of "mysterium"will remain after 64 days?

+2

Answers (2)

Know the Answer?

Kassidy Rowe · Answer 1

Kassidy Rowe 30 June, 08:09

0

300 / 18.75 = 16

answer: 18.75

Giovanny Vincent · Answer 2

19.14g

Explanation:

t½ = 16 days

N₀ = 300g

N=?

t = 64 days

t½ = 0.693 / λ

λ = 0.693 / t½

λ = 0.693 / 16

λ = 0.043

N = N₀ e⁻λt

N = 300e⁻⁰.⁰⁴³*⁶⁴

N = 300 * 0.0638

N = 19.14g

The amount of mysterium sample left after 64 days is 19.14g

You have a sample of a radioactive isotope of an element called "mysterium." Thehalf life of "mysterium" is 16 days. If you start with a 300 g sample of "mysterium,"what mass of "mysterium"will remain after 64 days?

You have a sample of a radioactive isotope of an element called "mysterium." The

half life of "mysterium" is 16 days. If you start with a 300 g sample of "mysterium,"

what mass of "mysterium"will remain after 64 days?