1 After each treatment, checking the hair and combing with a nit comb to remove nits and lice every 2â3 days may decrease the chance of selfâreinfestation. 2  Continue to check for 2â3 weeks to be sure all lice and nits are gone.
In chemistry, the molar mass M is a physical property defined as the mass of a given substance (chemical element or chemical compound) divided by the amount of substance. The base SI unit for molar mass is kg/mol. However, for historical reasons, molar masses are almost always expressed in g/mol.
Chapter 3 8 Molar Mass â¢ The atomic mass of any substance expressed in grams per mole (g/mol) is the molar mass (MM) of that substance.â¢ If the atomic mass of iron is 55.85 amu, then the molar mass of iron is 55.85 g/mol. Molar Mass = Mass mole m= n.