Answer:
5
Explanation:
just subtract 20-25 and 5 is left over which is how much the water when up with the rock.
It would be considered a Homogeneous Mixture. A mixture with two or more components mixed evenly is a Homogeneous mixture.
The shape of the H2O molecule is a Bent Triatomic.
It isn't symmetrical.
The H2O molecule is polar.
16 is the mass of an atom of Oxygen