this artist's illustration shows
earth shortly after the moon
formed. earth was hot and vol-
canic, and contained no liquid
water. the moon was much
closer to earth than it is today.
over time, earth's surface began
to cool, forming solid land.
could life have existed on
earth
at the time shown in the illus-
tration? why, or why not?

According to the diagram; a) identify the anode of the cell and write the half-reaction that occurs there b) write the overall equation for the reaction that occurs as the cell operates c) calculate the value of the standard cell potential ,e cell. d)write the shorthand notation of the cell above e)indicate the flow of the electrons on the diagram

How are evaporation and sublimation similar? a both involve the formation of a gas. b both release energy to the surroundings. c both take place throughout a solid. d both take place at the surface of a liquid.

At element makes up all organic compounds?