How many moles are in 6.38x10^22 molecules/atoms of CO2?

0.106 moles

Explanation:

To solve this problem we will need to use Avogadro's number, it is the number of molecules (or atoms) in one mol.

We convert molecules into moles using that number:

6.38x10²² molecules ÷ 6.023x10²³ molecules/mol = 0.106 moles

There are 0.106 moles in 6.38x10²² molecules of CO₂.

radioactive decay occurs in unstable atomic nuclei – that is, ones that don't have enough binding energy to hold

the nucleus together due to an excess of either protons or neutrons.