Question

2.68 x 10^24 atoms of Cu equal how many moles? Help!!!

Answer 1

Step-by-step explanation:

According to the mole concept, 1 mole of an atom contains
`6.022 * 10^(23)` atoms.

As it is given that there are
`2.68 * 10^(24)` atoms and we will calculate the number of moles present as follows.

`(2.68 * 10^(24) atoms)/(6.022 * 10^(23) atoms)`

= 4.45 mol es

Therefore, we can conclude that there are 4.45 mol present in
`2.68 * 10^(24)` atoms.

Answer 2

Answer:-
`2.68*10^2^4` atoms of Cu are equals to 4.45 moles.

Solution:- It is a atoms to moles unit conversion for which we divide the given number of atoms by Avogadro number.

`1 mol = 6.02*10^2^3 atoms`

We have been given with
`2.68*10^2^4` atoms and asked to convert them to moles.

The set up for this unit conversion problem would be as:

`2.68*10^2^4 atoms((1mol)/(6.02*10^2^3 atoms))`

= 4.45 moles

So, there would be 4.45 moles of Cu in
`2.68*10^2^4` atoms of Cu.