Choose an expression for the acid ionization constant (Ka)(Ka) for HFHF. Choose an expression for the acid ionization constant for . Ka=[H3O+][F−][HF]Ka=[H3O+][F−][HF] Ka=[F−][H3O+][HF]Ka=[F−][H3O+][HF] Ka=[HF][H3O+][F−]Ka=[HF][H3O+][F−] Ka=[H3O+][HF][F−]Ka=[H3O+][HF][F−]

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.