# Which one of the following is a valid statement of avogadro’s law?

## What is the statement of 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.

## Which of these is Avogadro’s law?

Avogadro’s law states that “equal volumes of all gases, at the same temperature and pressure, have the same number of molecules.” … As an example, equal volumes of molecular hydrogen and nitrogen contain the same number of molecules when they are at the same temperature and pressure, and observe ideal gas behavior.

## Which is a statement of Boyle’s Law?

For a fixed mass of an ideal gas kept at a fixed temperature, pressure and volume are inversely proportional. Or Boyle’s law is a gas law, stating that the pressure and volume of a gas have an inverse relationship. If volume increases, then pressure decreases and vice versa, when the temperature is held constant.

## What are the main applications of Avogadro’s law?

The main applications of Avogadro’s law are :

Determination of the molecular formula of a gaseous compound. Establishes relationship between the relative vapour density of a gas and its relative molecular mass. Establishes the relationship between gram molecular weight and volume of a gas at STP.

## Is Avogadro’s Number?

Avogadro’s number is defined as the number of elementary particles (molecules, atoms, compounds, etc.) per mole of a substance. It is equal to 6.022 × 1023 mol-1and is expressed as the symbol NA. Avogadro’s number is a similar concept to that of a dozen or a gross.

## What does Boyles law mean?

This empirical relation, formulated by the physicist Robert Boyle in 1662, states that the pressure (p) of a given quantity of gas varies inversely with its volume (v) at constant temperature; i.e., in equation form, pv = k, a constant. …

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## Why is Avogadro’s law important?

1 Answer. 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.24 мая 2015 г.

## What’s another name for the mole?

What is another word for mole?blemishfrecklebirthmarkblotnevusbeauty markbeauty spotstrawberry markpatchnaevus

## What is r in pV nRT?

Ideal Gas Law. This law combines the relationships between p, V, T and mass, and gives a number to the constant! The ideal gas law is: pV = nRT, where n is the number of moles, and R is universal gas constant. The value of R depends on the units involved, but is usually stated with S.I. units as: R = 8.314 J/mol·K.

## How does Boyle’s law apply to real life?

If you decrease its pressure, its volume increases. You can observe a real-life application of Boyle’s Law when you fill your bike tires with air. When you pump air into a tire, the gas molecules inside the tire get compressed and packed closer together. … One important demonstration of Boyle’s law is our own breathing.

## What is another way to write Charles Law?

Charles’s law (also known as the law of volumes) is an experimental gas law that describes how gases tend to expand when heated. … When the pressure on a sample of a dry gas is held constant, the Kelvin temperature and the volume will be in direct proportion.

## Are volume and temperature directly proportional?

Charles’s law, or the law of volumes, was found in 1787 by Jacques Charles. It states that, for a given mass of an ideal gas at constant pressure, the volume is directly proportional to its absolute temperature, assuming in a closed system.

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## What is a real life example of Avogadro’s law?

A flat tire takes up less space than an inflated tire, because it contains less air. Lungs expand as they fill with air. Exhaling decreases the volume of the lungs. A balloon filled with helium weighs much less than an identical balloon filled with air.

## What does Avogadro’s law say about a gas at STP?

Avogadro’s hypothesis states that equal volumes of all gases at the same temperature and pressure contain equal numbers of particles. … Standard temperature and pressure (STP) is defined as 0°C (273.15 K) and 1 atm pressure. The molar volume of a gas is the volume of one mole of a gas at STP.