A certain radioactive isotope decays at a rate of 85% hourly. Determine the half-life of this isotope to the nearest minute. Use the formula A = lekt where A is the amount at time t, I is the initial amount, and k is the decay constant unique to the substance. a. 256 min
b. 14 min
c. 22 min
d. 18 min
e. 35 min

Monkeys and bats have similar bone structure in their forelimbs. however, monkeys have longer forelimbs to use for climbing and swinging in trees. bats have shorter forelimbs to use for flight. which term best describes how monkey and bat forelimbs are related to each other? a. homologous b. embryonic c. analogous d. vestigial

Which of these conditions most likely produces an unstable isotope?

650.j is the same amount of energy as? 2720cal1550cal650.cal2.72cal