Compare the compressibility of gases and liquids. Support your answer by describing the arrangement of particles in gases and liquids.

The answer depends in part on your branch of science.

For Mechanical Engineers, gasses are compressible and liquids are not. A good rule for designing hydraulic systems.

For Chemical Engineers, everything is compressible.

For Civil Engineers, they see expansion and contraction of roadways and bridges. When they look at a steel beam supporting a weight, the top is in compression and the bottom is in tension.

For neutron stars, there is obvious compression, but I'm not sure whether to call it a solid, liquid, or gas.

Explanation:

fe 55.85 g/mol and h2o 18.02 g/mol.