A thermodynamic cycle which works to cause heat to flow from a cold resorption to a hotter reservoir is called? a. a heat reservoir
b. a heat pump
c. a heat engine
d. a perpetual motion machine

What are the first three quantum numbers for the electrons located in subshell 2s?

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.

Consider the story you just read. all but one of the choices below indicate that something is living.