I need help solving this problem:

How many moles is 1.5x10^23 atoms of Carbon

To find out how many moles is 1.5x10^23 atoms of Carbon, we will use Avogadro's number, which is represented by 6.022x10^23 atoms or molecules per mol.

To convert from atoms to moles, divide the atoms by Avogadro's number.

So, now we can convert the numbers into proper form:

1.5x10^23 ---> 1.5E23

6.022x10^23 ---> 6.022E23

Then, we divide them.

1.5E23/6.022E23 = 0.24908

Round to nearest hundredth.

0.24908 --> 0.25

Therefore, there are 0.25 moles of carbon in 1.5E23 atoms of carbon.

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