Answer:
[tex]5.60046 \times 10^{24} \text{ molecules}[/tex] of carbon monoxide (CO)
Explanation:
You can solve that by a simple association. If 1 mol is equivalent to the Avogadro's Number ([tex]6.022 \times 10^{23}[/tex] molecules), therefore 9.3 is equivalent to...
[tex]1 \text{ mol} - 6.022 \times 10^{23} \text{ molecules}\\9.3 \text{ mol} - x \text{ molecules}\\x = 9.3 \times 6.022 \times 10^{23}\\x = 5.60046 \times 10^{24} \text{ molecules}[/tex]
In sum, you multiply the number of moles of CO with the Avogadro's Number and then you get your result. If you are coming from mass and then going to particles, the process is a little longer.
Hope it helps, happy studies :)