# How can you find atoms and molecules?

Apr 3, 2018

Well you can find atoms and molecules, using the Avogadro's constant;

#### Explanation:

Using this formula;

$\text{No of moles" = "Atoms"/"Avogadro's constant}$

Where, Avogadro's constant is $6.023 \times {10}^{-} 23$

Apr 4, 2018

Refer to the explanation.

#### Explanation:

If you know moles of atoms or molecules, you can determine the number of atoms or molecules using Avogadro's number:

Example 1

How many atoms are in $\text{5.0 mol Cu}$?

5.0color(red)cancel(color(black)("mol Cu"))xx(6.022xx10^23"atoms Cu")/(1color(red)cancel(color(black)("mol Cu")))=3.0xx10^24" atoms Cu"

Example 2

How many molecules are in ${\text{3.5 mol C"_6"H"_12"O}}_{6}$?

3.5color(red)cancel(color(black)("mol C"_6"H"_12"O"_6))xx(6.022xx10^23"molecules C"_6"H"_12"O"_6)/(1color(red)cancel(color(black)("mol C"_6"H"_12"O"_6)))=2.1xx10^24" molecules C"_6"H"_12"O"_6"