It is possible for head lice to live temporarily on items such as bedding, couches, hair accessories, car seats, toys and clothing. Fortunately, head lice can only survive 24-48 hour off of the head and are relatively easy to remove from the home.
The molar mass of aspirin (2-acetoxybenzoic acid), C9H8O4, is 180.157 g/mol. The molar mass of aspirin (2-acetoxybenzoic acid), C9H8O4, is 180.157 g/mol.
It would seem that because calcium and oxygen are in equal molar  ratio for this compound that it would be 50 percent. But that is  incorrect, because they each have differiâ¦ng molar masses. Oxygen  has a molar mass of 16.000 and calcium has a molar mass of 40.078.