## Fascinating
Facts

### Avogadro Number

- The entire Karnataka State may be submerged
to a depth of much more than 100 kilometers.
- You can calculate and check
- Consider 20 drops as 1Cm
^{3}
- Find the volume of Avogadro number of drops.
This volume will be in Cm
^{3} - Convert the volume into Km
^{3.}
- Divide it by the area in Km
^{2}. The
answer will be the height in Km.
- Your life time will not be sufficient to distribute
that wealth. In fact it will take thousands of years.
- Again you can calculate and check.
- Number of
people x 1000 x 60 x 60 x 24 x 365 . This will be the amount
you will spend in a year.
- Find how many years you will need
to spend Avogadro number of Ruppees.
- Spending one billion a
second it would take 19 million years.

- Avogadro number(N) is defined as the number
of Carbon-12 atoms in 12g of C-12.
- Avogadro number of particles(N) is considered
as 1 mole of particles. Thus Avogadro number of methane molecules(N)
will be one mole of methane. 16g of methane (molecular weight
of methane is 16)will contain N molecules of methane, they will
occupy 22.4 liters under standard conditions.
- Thus one mole of any gas under standard conditons
will occupy 22.4 liters. This is called "gram molecular
volume".
- The precise number is unknown, since it is not
possible to physically count the number of atoms.
- It is normally considered as 6.023 x10
^{23}
- More accurately 6.0221415 x 10
^{23} (with
an uncertainty of 0.000 0010 x 10^{23})
- There are many ways available for estimation
of this number, the most accurate for the present being through
X-ray studies of crystals.
- A number of web sites are available which give
information about these methods and other fascinating details.
Just browse for Avogadro number.

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