Which of the following experiments raises ethical concerns?
A. research that releases a poisonous gas into the air
B. research that people have been apart of with their full knowledge and permissions.
C. research that an ethics committee has approved of
D. lab research that uses poisonous chemicals in very small amounts

16. why must the number of electrons lost equal the number of electrons gained in every redox reaction? use 3 – 4 sentences in your own words to address this question. 18. what type of radiation is emitted when chromium-51 decays into manganese-51? show the nuclear equation that leads you to this answer. 19. a radioactive nucleus alpha decays to yield a sodium-24 nucleus in 14.8 hours. what was the identity of the original nucleus? show the nuclear equation that leads you to this answer.