Microbiologists use acid-alcohol when performing a cell stain of the pathogen Mycobacterium tuberculosis. A common recipe is to make 3%(wt/vol) HCl in ethanol. HCl has a formula weight of 36.46 grams per mole. If the stock solution of HCl is 1 moles per 1000 mL, how many mL of HCl need to be added to achieve a final volume of 25 mL of acid alcohol solution

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