Why do the inner walls of a vacuum flask have a silver coating?

This image is an example of a(n) a) atom. b) compound. c) mixture. d) molecule.

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.

Which organism develops breathing organism develops breathing organs from pharyngeal arches? shark, spider, sea star, sea horse