Question

How can you find atoms and molecules?

Answer 1

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

Explanation:

Using this formula;

`"No of moles" = "Atoms"/"Avogadro's constant"`

Where, Avogadro's constant is `6.023 xx 10^-23`

Answer 2

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 `"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 `"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"`