Evaluate 8^2 x (1/4)^2
a) 4
b) 10 1/16
c) 16
d) 16 1/4

Suppose a laboratory has a 30 g sample of polonium-210. the half-life of polonium-210 is about 138 days how many half-lives of polonium-210 occur in 1104 days? how much polonium is in the sample 1104 days later? 9; 0.06 g 8; 0.12 g 8; 2,070 g