Aluminum has a density of 2.7 g/cm3. if a chunk of aluminum with a mass of 10.8 g is placed in a graduated cylinder partially filled with water, how much will the water level rise?

Explanation:

As you can see density of aluminium is 2.7 g/cm3 so in order to calculate the volume of a piece of aluminium that is 10.8 g we just ahve to clear the volume from the density formula:

Now that we have cleared the formula we just have to insert the values:

So the volume of the aluminum piece is 4 cm3 so the volume of water displaced would be the same, 4 cm3.

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.