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.
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 × 1023 atoms). And one mole of any elements is its atomic mass. Phosphorus' atomic mass is 31.0 grams
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.