Can Someone Please Help Me With This Question?
A scientist has a sample of the radioactive isotope bismuth-212. The isotope decays exponentially as shown in the table.
Time (seconds) Mass (grams)
10 26.8
20 23.9
30 21.3
40 19.0
50 16.9
60 15.1
What was the approximate mass of the original sample?
A.
27 grams
B.
28 grams
C.
29 grams
D.
30 grams
