* Butane's Formula: Butane has the chemical formula C₄H₁₀. This means each molecule of butane contains 4 carbon atoms.

* Avogadro's Number: One mole of any substance contains 6.022 x 10²³ particles (atoms, molecules, etc.).

Calculation:

Since one mole of butane contains 6.022 x 10²³ butane molecules, and each butane molecule has 4 carbon atoms:

* Number of carbon atoms = (4 carbon atoms/molecule) * (6.022 x 10²³ molecules/mole)

* Number of carbon atoms = 2.409 x 10²⁴ carbon atoms/mole

Therefore, there are approximately 2.409 x 10²⁴ carbon atoms in one mole of butane.