Question

NEED HELP ASAP!!!

Which of the following sentences describes oxygen at room temperature? (check all that apply)

Question 10 options:

Its particles move fast enough to overcome the attraction between them.


It has a constant volume and a definite shape.


It has more energy than it would at a cooler temperature.


It has no definite volume and takes the shape of its container.


It has no definite volume, but it has a definite shape.


It has a constant volume but takes the shape of its container.

Answer 1

At room temperature oxygen, $O_2$ is present in the gas phase.

A gas is defined as a substance which is characterized by the rapidly movement of molecules which are widely separated. The shape and volume of gas is not definite that is they take on the shape of the container in which it is placed. The gas molecules have minimum inter-nuclear attractions and thus have high kinetic energy.

Thus, the sentences that describes oxygen at room temperature are:

• It has no definite volume and takes the shape of its container.
• Its particles move fast enough to overcome the attraction between them.
• It has more energy than it would be at a cooler temperature as the kinetic energy is directly proportional to the temperature that is kinetic energy increases on increasing the temperature.