Na2s2o3 (aq) + 2hno3 (aq) →
a. 2nano3 (aq) + h2o (l) + so2 (g) + s (s)
b. h2o (l) + so2 (g) + s (s)
c. 2nano3 (aq) + h2o (l) + s (s)
d. 2nano3 (aq) + h2o (l) + so2 (g)

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.