Understanding the Concepts

* Avogadro's Number: This fundamental constant tells us that there are 6.022 x 10^23 particles (atoms, molecules, etc.) in one mole of any substance.

* Moles and Molecules: A mole is a unit of measurement for the amount of substance. One mole contains a specific number of particles (Avogadro's number).

Calculations

1. Convert molecules to moles:

* Divide the given number of molecules by Avogadro's number:

(9.25 x 10^24 molecules) / (6.022 x 10^23 molecules/mole) = 15.36 moles

Answer:

There are 15.36 moles of C3H8 in 9.25 x 10^24 molecules of C3H8.