The process by which a substance changes from a gas tank state to the liquid state is

Condensation

Explanation:

Condensation is the process in which a gas turns into a liquid, by releasing heat. In such a process, heat is released from the gas to the environment, and the molecules of the gas become closer to each other, and they feel more the intermolecular forces between each other.

The processes that describe the different changes of phase of matter are:

- Melting: when a solid turns into a liquid, absorbing energy

- Evaporation: when a liquid turns into a gas, absorbing energy

- Condensation: when a gas turns into a liquid, releasing energy

- Freezing: when a liquid turns into a solid, releasing energy

- Sublimation: when a solid turns into a gas, absorbing energy

- Deposition: when a gas turns into a solid, releasing energy

answer: 802.3 kilo joules of energy represents 191.75 kilo calorie of energy.

explanation:

energy released during combustion of one mole methane = 802.3 kilo joules

if 1 kilo joule = 0.239006   kilo calorie

then ,802.3 kilo joule will be = 802.30.239006 kilo calorie

802.3 kilo joule = 191.75 kilo calorie

hence, the energy in kilo calorie is 191.75 kilo calorie.

true is the correct answer

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