Which of the following sets represents a pair of isotopes?
a. 14c and 14n
b. br and br2
c. 9b and 11b
d. 16o and 16o2-

What happened in 2012 and how does it illustrate the importance of understanding the sun and how it works?

Which formula can be used to calculate the molar mass of hydrogen peroxide

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.