Answer:
![7.191*10^(24)molecules](https://img.qammunity.org/2023/formulas/chemistry/college/nw25b1431yhz92izhto8kx3445pswqrd4f.png)
Explanations:
According to the Avogadros constant, 1 mole of an atom is equivalent to 6.02*10^23 molecules
Given the following parameter
Moles of CO2 = 11.945 moles
Convert the moles to molecules
![\begin{gathered} molecules\text{ of CO}_2=11.945moles*(6.02*10^(23)molecule)/(1mole) \\ molecules\text{ of CO}_2=11.945*6.02*10^(23)molecules \\ molecules\text{ of CO}_2=71.9089*10^(23)molecules \\ molecules\text{ of CO}_2=7.191*10^(24)molecules \\ \end{gathered}](https://img.qammunity.org/2023/formulas/chemistry/college/es2mpmg0x0d14ynjrvfq16fdlhbsiuh5ff.png)
Hence the number of molecules present in 11.945 moles of CO2 is 7.191 * 10^24 molecules