Given the two half-cell reactions for copper and iron below

standard

electrode potential (v)

cu →cu+2 +2e- -0.41

fe→ fe2+ 2e- 0.34

would you use a water pipe that consists of the two metals? justify your answer!

c is the answer because when something is left after something evaporates that shows the chemical change.

we can conclude that the melting point of table salt is above room temperature (it's actually 801 deg c). the melting point of mercury must be below room temperature (- 39 deg c).

the answer is minerals.