Author Question: There are samples of two different isotopes, X and Y. Both contain the same number of radioactive ... (Read 36 times)

joesmith1212 · **on:** Jul 28, 2018

There are samples of two different isotopes, X and Y. Both contain the same number of radioactive atoms. Sample X has a half-life half that of Y. How do their decay rates compare?
a. The rates of X and Y are equal.
b. X has a greater rate than Y.
c. The rate depends on atomic number, not half-life.
d. X has a smaller rate than Y.

Question 2

If a fossil bone is found to contain 1/16th as much Carbon-14 as the bone of a living animal, what is the approximate age of the fossil? (half-life of 14C = 5730 years)
a. 7640 years
c. 45,800 years
b. 22,900 years
d. 17,200 years