Who stated a law that equal volumes of gases contain the same number of molecules at the same temperature and pressure?

Amedeo Avogadro
The law is named after Amedeo Avogadro who, in 1812, hypothesized that two given samples of an ideal gas, of the same volume and at the same temperature and pressure, contain the same number of molecules.

What is Avogadro’s law and why is it significant?

Avogadro’s law investigates the relationship between the amount of gas (n) and volume (v). It’s a direct relationship, meaning the volume of a gas is directly propotional to the number of moles the gas sample present. The law is important because helps us save time and money in the long-run.

What is Avogadro’s hypothesis in chemistry?

Avogadro’s hypothesis is another classical gas law. It can be stated: At the same temperature and pressure, equal volumes of different gases contain the same number of molecules. The currently accepted value is 6.02214199×1023 molecules per mole.

Why do all gases have the same volume?

Avogadro’s Law (sometimes referred to as Avogadro’s hypothesis or Avogadro’s principle) is a gas law; it states that under the same pressure and temperature conditions, equal volumes of all gases contain the same number of molecules.

Why is the combined gas law called the combined gas law?

Unlike the named gas laws, the combined gas law doesn’t have an official discoverer. It is simply a combination of the other gas laws that works when everything except temperature, pressure, and volume are held constant. The constant k is a true constant if the number of moles of the gas doesn’t change.

Why do all gases occupy the same volume at STP?

As all gases that are behaving ideally have the same number density, they will all have the same molar volume. At STP this will be 22.4 L. This is useful if you want to envision the distance between molecules in different samples.

How is the law of combining volumes explained by Avogadro’s Hypothesis?

Avogadro’s Hypothesis (Amadeo Avogadro) Avogadro argued that Gay-Lussac’s law of combining volumes could be explained by assuming that equal volumes of different gases collected under similar conditions contain the same number of particles.

Which contains the same number in a volume of gases in Avogadro’s law?

Avogadro’s law, a statement that under the same conditions of temperature and pressure, equal volumes of different gases contain an equal number of molecules.

Do all gasses have the same volume?

Do gases have different volumes?

Gas is a state of matter that has no fixed shape and no fixed volume. Gases have lower density than other states of matter, such as solids and liquids.

What is the law of combining gas volumes?

Definition: law of combining volumes. When gases combine at constant temperature and pressure, the volumes involved are always in the ratio of simple whole numbers. Since the factor RT/P would be the same for all three gases, the volume of O2(g) consumed must be half the volume of H2(g) consumed.

What do equal volumes of all gases under similar conditions contain?

Equal volumes of all gases under similar conditions of temperature and pressure contain equal numbers of molecules. This statement was made by: a) Gay- lussae Hey mate… here’s the answer… Equal volumes of all gases under similar conditions of temperature and pressure contain equal numbers of molecules. This statement was made by: Option B..

Do all gases contain the same number of molecules?

Equal volumes of all gases under similar conditions of temperature and pressure contain equal numbers of molecules. This statement was made by: Option B.. ◆Equal volumes of all gases under similar conditions of temperature and pressure contain equal numbers of molecules. This statement was made by Avogadro.

How do you find the number of molecules in a gas?

According to Avogadro’s law, equal volumes of all gases under the same conditions of temperature and pressure contain an equal number of molecules. Mathematically it can be stated as, V ∝ n. Where, V= volume of gas. n = number of moles. V= k n. Where k is the constant of proportionality.

What is the relationship between volume and number of moles?

Relationship between volume and number of moles of a gas at constant temperature and pressure. Avogadro’s law (sometimes referred to as Avogadro’s hypothesis or Avogadro’s principle) is an experimental gas law relating the volume of a gas to the amount of substance of gas present. The law is a specific case of the ideal gas law.