To calculate the number of moles in 1.25 x 10^23 molecules of Carbon Dioxide, you can use Avogadro's number, which states that 1 mole of any substance contains 6.022 * 10^23 molecules.
So, 1.25 × 10^23 molecules of CO2 divided by Avogadro's number (6.022 × 10^23 molecules/ mol) would give you the number of moles.
Therefore, for 1.25 × 10^23 molecules of CO2, the number of moles would be approximately 0.207 moles.
