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Avogadro's number is the number of "elementary entities" (usually atoms or molecules, ions, electrons, protons etc.) in one mole. Its value is 6.0221415 × 1023.

There are 6.0221415 × 1023 atoms per mole of atoms. This number is known as Avogadro's number.

Compare this to: There are 6 bottles in one six-pack, 12 eggs in one dozen, 12 dozen eggs in one gross (144) etc. They are just numbers.

Note: A mole is a useful quantity, because the mass of 1 mole of a substance will have the same 'grams' as the Atomic Mass. Example Helium with 2 protons and 2 neutrons, has atomic mass = 4. One mole of Helium atoms have a mass of 4 grams.

If you had a mole of sheets of paper stacked up, it would be 125 BILLION times taller than the distance between Earth and the moon! Now that's a big stack of paper! A mole of water molecules, on the other hand, is about is about 1/2 a fluid ounce of water!

The atoms in a water molecule (H2O) has an atomic mass of (1 + 1 + 16 = 18), so 1 mole of water is 18 grams. With the density of liquid water at nearly 1 gram/milliliter, this mole of water has a volume of 18 milliliter = 0.61 fluid ounce.

So for example, if you have 1 mole of atoms, you have 6.02 x 1023 atoms.

Or, if you have 2 moles of atoms, then you have 1.204 x 1024 atoms.

In other words, to convert from moles of atoms to number of atoms, multiply by 6.02 x 1023.

If instead you have 1.8 x 1023 atoms, then to find the number of moles, just divide:

1.8 x 1023 ÷ 6.02 x 1023 = 0.299 moles.

In other words, to convert from number of atoms to moles, divide by 6.02 x 1023.

Avogadro's number is 6.02*10^23.

Q: What is Avogadro's Number?

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atoms in 12 g of c-12

The unit is "per mole", or mol^-1.

Avogadro's number represents the number of units of a substance in one mole of the substance. These units may be electrons, atoms, ions, or molecules, depending on the substance.

A mole of any substance has the Avogadro's number of such units. As an example, a mole of hydrogen atoms is equivalent to 6.022 x 1023 atoms.

By saying Avogadro's number of atoms, you are saying one mole (or 6.02 Ã— 1023 atoms). And one mole of any elements is its atomic mass. Phosphorus' atomic mass is 31.0 grams

Related questions

A mole.

No.

Its avogadros number

I asked this question wrong. It should be Avogadros Number. Sorry!

atoms in 12 g of c-12

It is 6.02 (times) 10 to the power of 23

The unit is "per mole", or mol^-1.

It is the number of fundamental particles - atoms or molecules - of a substance in 1 mole of that substance.

There is 1 mole of atoms in 6.022 x 10^23 atoms of any element.

Its avogadros number which is 6.02 X 10^23 g/mol

Avogadro's number represents the number of units of a substance in one mole of the substance. These units may be electrons, atoms, ions, or molecules, depending on the substance.

1 mole has 6,022 140 857 (74).1023 molecules, atoms, ions.