The particles in water have less mobility than the particles in oxygen. which statement best explains this observation? water is always colder than oxygen. water has a lower density than oxygen. water particles have a greater kinetic energy. water particles have strong intermolecular forces.

The correct answer is (water particles have strong intermolecular forces).

The explanation :

when the intermolecular forces are the forces that interaction between molecules, including forces of attraction or repulsion which are between molecules and other types of neighboring particles and ions.

so this is the best statement describe the mobility of particles in water.

Option (d) is the correct answer.

Explanation:

Oxygen is a gas, therefore, its particles are rapidly in motion from one place to another. This is because there are no intermolecular forces of attraction between the particles of a gas. Hence, they are free to move and have high mobility.

Whereas in a liquid, the particles are closer as compared to the particles in gases. This is due to the strong intermolecular force of attraction between the particles of a liquid. Hence, liquids have less mobility.

Thus, we can conclude that the particles in water have less mobility than the particles in oxygen because water particles have strong intermolecular forces.

c. heat could easily travel through the molecules in the air and escape/enter the flask. removing the air slows down the heat transfer.  

c is the answer because when something is left after something evaporates that shows the chemical change.