A 0.1393-g sample of an unknown monoprotic acid was dissolved in 29.0 mL of water and titrated with 0.0627 M NaOH solution. The volume of base required to bring the solution to the equivalence point was 18.2 mL. (a) Calculate the molar mass of the acid. (b) After 10.4 mL of base had been added during the titration, the pH was determined to be 5.35. What is the Ka of the unknown acid

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.