Aspirin c6h4(co2)(co2ch3),can be prepared inthe chemistry laboratory by the reactions of salicylic acid, c6h4(co2h)(oh),with aceticanhydride(ch3co)2o. what
volume of acetic anhydride(density,1.0820g/cm3) is required to produce 1.00kg of aspirin, assuming a 100% yield

In 2002, the rare earth elements mine in mountain pass, california was closed because

The yearly amounts of carbon emissions from cars in belgium are normally distributed with a mean of 13.9 gigagrams per year and a standard deviation of 5.8 gigagrams per year. find the probability that the amount of carbon emissions from cars in belgium for a randomly selected year are between 11.5 gigagrams and 14.0 gigagrams per year. a. 0.340 b. 0.660 c. 0.167 d. 0.397

If anyone would be able to me out with these three questions it would be these are from the chem 2202 course.