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.
The mass of aspirin is 1.4791g and the theoretical yield is 2.61g. So, the percent yield is 56.7%. Why is the yield not as expected (100%). I so far have that not all the aspirin was put into solution when ethanol was added. There could also be some leftover impurities (though I don't know if this is actually right).