Please help with everything. Make sure to explain the mechanisms. THANKS

If a solution had a ph of 7 what is the solution

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.

Elements in group 2 are all called alkaline earth metals. what is most similar about the alkaline earth metals?