Final answer:
One mole of CO2 molecules contains 1 mole of carbon atoms and 2 moles of oxygen atoms, consistent with the molecular formula CO2 and stoichiometry.
Step-by-step explanation:
One mole of CO2 molecules contains 1 mole of C atoms and 2 moles of O atoms. In chemistry, a mole is a unit that represents a specific number of particles, usually atoms or molecules. This number is Avogadro's number, which is approximately 6.022 x 1023. The molecular formula of carbon dioxide, CO2, indicates that each molecule consists of one carbon atom (C) and two oxygen atoms (O). Thus, when we have one mole of CO2, we inherently have one mole of carbon atoms due to the one-to-one ratio between CO2 molecules and carbon atoms.
Moreover, since each CO2 molecule contains two oxygen atoms, we have twice as many moles of oxygen atoms as we do CO2 molecules. Consequently, one mole of CO2 yields two moles of oxygen atoms. This stoichiometry is key to understanding and calculating the compositions of chemical reactions and substances.