Malathion is pediculicidal (kills live lice) and partially ovicidal (kills some lice eggs). A second treatment is recommended if live lice still are present 7â9 days after treatment. Malathion is intended for use on persons 6 years of age and older.
Molar mass is computed as the sum of the masses of all elements in the compound considering one mole of that substance. The mass of Ca is 40.08 amu while the mass of I2 is 126.9 amu. In the equation, there are 1 unit of Ca and 2 units of I2. Thus, (1 Ca x 40.08 amu) + (2 I2 x 126.9 amu) is equal to 293.88 amu.
The mass of one mole of an element or compound is called its molar mass (symbol M). The molar mass of copper is 63.5 g mol -1. The molar mass of sodium hydroxide is 40 g mol -1. There is a quantity that relates to the number of particles in a mass of substance. This quantity is called the amount of substance.