Answer:
Mole of the H2O = 4.5
Number of molecules =4.5 multipled by avogadro's number.
Molecules move more slowly in solids because there they are all very compact
Answer:
Density
Explanation:
Density is defined as the mass per unit volume. It is the ratio between the mass and the volume of a substance. It does not matter how large or small a sample of matter is, the same substance will always have the same density, because of this. The ratio between the mass and volume remains the same.
Answer: C
Explanation:
The impact she has on the environment
