The molecular formula of lauryl alcohol is C12H26O
the approximate molar mass of lauryl alcohol is calculate the mass of 12 carbon , 26 hydrtogen and one oxygen as follows:
12 C* 12.01 g/ mole +26 H*1.008 g/ mole +15.99 g/mole
= 144.12 g/ mole +26.208 g/ mole +15.99 g/mole
= 186.318 g/ mole