1. Calculate the molar mass of C6H6:
* Carbon (C) has a molar mass of 12.01 g/mol.
* Hydrogen (H) has a molar mass of 1.01 g/mol.
* Molar mass of C6H6 = (6 * 12.01 g/mol) + (6 * 1.01 g/mol) = 78.12 g/mol
2. Convert grams of C6H6 to moles:
* moles = mass / molar mass
* moles = 5.23 g / 78.12 g/mol = 0.0670 mol
3. Use Avogadro's number to convert moles to molecules:
* Avogadro's number = 6.022 x 10^23 molecules/mol
* Number of molecules = moles * Avogadro's number
* Number of molecules = 0.0670 mol * 6.022 x 10^23 molecules/mol = 4.04 x 10^22 molecules
Therefore, there are approximately 4.04 x 10^22 molecules in 5.23 grams of C6H6.
