Humidity

Humidity states the amount of water vapor in the air. When rains, the atmosphere is very humid because there is a lot of water vapor in the air. Conversely, if the water vapor in the air is very little,...

Diffusion

If we look carefully, the smoke from the combustion initially can be seen. After a while, smoke cannot be viewed. Have you used a perfume? Even though you spray perfume in the room, other people who are outside the...

Internal energy of an ideal gas

Energy in a monatomic ideal gas The energy in the monatomic ideal gas is the total amount of translational kinetic energy of monatomic ideal gas molecules. The total amount of translational kinetic energy of the ideal gas molecules =...

Theorem of equipartition of energy

The energy equipartition theorem was derived theoretically by Clerk Maxwell using statistical mechanics. It is called a theorem because there is no proof through experimentation. The energy partition means equal distribution of energy. KE = average translational kinetic energy...

Average kinetic energy of gases

In addition to pressure, one of the quantities that states the macroscopic nature of gas is temperature (T). Gas pressure equation: Combine the equation 1 and the equation 2 : This is the equation of the average kinetic energy...

Kinetic theory of gases

The kinetic theory states that every substance consists of atoms or molecules and that the atom or molecule moves continuously carelessly. This assumption of kinetic theory matches the situation and condition of the atom or molecule of the gas...

Boyle’s law, Charles’s law, Gay-Lussac’s law

Boyle’s law Robert Boyle (1627-1691) conducted experiments to investigate the quantitative relationship between gas pressure and volume. This experiment is carried out by inserting a certain amount of gas into a closed container. Until a pretty good approach, he...

The ideal gas law

The gas laws of Boyle, Charles law and Gay-Lussac do not apply to all gas conditions, so our analysis becomes more difficult. Therefore presented the ideal gas model. Ideal gas does not exist in everyday life; the ideal gas...

Entropy

The specific statements of the second law of thermodynamics can’t describe for all irreversible processes, so we need a general statement. This general statement is expected to explain all irreversible processes occurring in the universe. The general statement of...

Coefficient of performance of the cooling machine

A cooling machine is a machine that takes heat from a low-temperature place, then transfers it to a high-temperature area. For this process to happen, the machine must do the work, because the heat naturally flows from high temperature...