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 mass = #1Ca + 2 [ 1N + 3O ] #. Molar mass =# 40 + 2( 14 + 48 ) #. molar mass= #40 + 2 ( 62) #. molar mass= # 40 + 124 #. molar mass= # 164 #.