Helen is studying the properties of solids. She is comparing the wooden cube and the steel cube shown in the picture below. mc065-1

Which property is the same for the two cubes?

color

luster

texture

volume

when [oh-] is 10-5  m, and [h3o+] is 10-9  m, the poh is 5 and ph is 9. again in both cases the sum of ph and poh is 14. however, the hydrogen ion concentration is not always going to be equal to exactly 1 x 10 raised to a negative number. for example, we skipped over the value of 2.0 x 10-7.

the answer is c i believe