Please help !!

When a gas like the one shown is released into a room, it tends to fill the room. Kinetic molecular theory explains this by assuming
that

A) gas particles are heavy.

B) gas particles travel as individual atoms.

C) gas particles are extremely light

D) gas particles have no attraction for each other.

The answer is D

Explanation:

Just took a quiz and got it right, hope this helps

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

if it's not useful, feel free to report for mistake in answer.

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.