Final answer:
To find the number of moles in 2.59x10^24 molecules of CO2, divide by Avogadro's number, yielding approximately 4.3 moles.
Step-by-step explanation:
To calculate how many moles are in 2.59x1024 molecules of CO2, you need to use Avogadro's number, which is 6.022x1023 molecules per mole. The number of moles is found by dividing the number of molecules by Avogadro's number:
Number of moles =
2.59x1024 molecules CO2 / 6.022x1023 molecules/mole
After performing the division, we find that there are approximately 4.3 moles of CO2.