The diameter of a single zinc atom is 2.7 x 10-8 cm. Divide the thickness of the zinc coating per side of the galvanized iron by the diameter of a single zinc atom to calculate the number of layers of atoms in the zinc coating.

If two atoms are bonded to a central atom with no lone pairs,how will they be arranged

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.

12. calculate the hydroxide ion concentration of a solution with ph = 3.25. show all calculations leading to an answer