1)C-14 has half-life of 5,730 years. You begin with 600 grams. A. At the end of tge first half life how much substance is still radioactive.

B. After 4 half-life how much would remain radioactive and how much would be stable

5,730 years; The graph shows that 50 percent of the carbon-14 atoms have decayed after 5,730 years, so 5,730 is the half-life of carbon-14. 2. 12.5% 3.

Explanation:

answer;

-phase iii

explanation;

phase three begins with the transition of a recovered individual to a phase three team of the appropriate service. this phase usually takes place at a military medical facility in the united states. one of the goals of phase three is family reunification.