Final answer:
To calculate the number of molecules in 1 mole of oleic acid, you need to know the molar mass of oleic acid and use Avogadro's number.
Step-by-step explanation:
To calculate the number of molecules in 1 mole of oleic acid, we first need to know the molar mass of oleic acid. The molar mass can be calculated by summing up the atomic masses of all the elements in the compound. Oleic acid has the molecular formula C18H34O2. The atomic masses of carbon, hydrogen, and oxygen are approximately 12.011 g/mol, 1.008 g/mol, and 16.00 g/mol respectively.
Molar mass of C18H34O2 = (18 x 12.011) + (34 x 1.008) + (2 x 16.00)
= 282.46 g/mol
Avogadro's number states that 1 mole of any substance contains 6.022 x 10^23 molecules. Therefore, 1 mole of oleic acid contains 6.022 x 10^23 molecules.