Ice floats because it is about 9% less dense than liquid water. ... The heavier water displaces the lighter ice, so ice floats to the top. One consequence of this is that lakes and rivers freeze from top to bottom, allowing fish to survive even when the surface of a lake has frozen over
Answer:
Maritime tropical air mass
Continental polar air mass
Dexter already has 4 and he gets 38 so 4+38=42. Than 42/6=7. 7 plates on each table.
The percentage by mass of the compound of water is going to be 8.62%.