Use the periodic table to calculate the molar mass of each of the following compounds. give your answer to the correct number of significant figures. ammonia (nh3): g/mol lead(ii) chloride (pbcl2): g/mol acetic acid (ch3cooh): g/mol

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.