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.
Molar Masses and Total Masses in Compound Ca: 40.078 g x 3 = 120.234 g P: 30.973 g x 2 = 61.946 g O: 15.999 g x 6 = 95.994 g Total Mass = 278.174 g To find percent of each one, divide amount of the type present by the total.