To calculate the molar mass of a compound, you need to sum up the atomic masses of all the elements present in the compound, taking into account the number of atoms of each element.
For C5F12 (which represents five carbon atoms and twelve fluorine atoms), you can calculate the molar mass as follows:
(5 x atomic mass of carbon) + (12 x atomic mass of fluorine)
Using the atomic masses of carbon and fluorine from the periodic table:
(5 x 12.01 g/mol) + (12 x 19.00 g/mol) = 60.05 g/mol + 228.00 g/mol = 288.05 g/mol
Therefore, the molar mass of C5F12 is approximately 288.05 grams per mole (g/mol).