The chemical formula for potassium bromide is KBr . A chemist determined by measurements that 0.010moles of potassium bromide participate in a chemical reaction. Calculate the mass of potassium bromide that participates. Be sure your answer has the correct number of significant digits.

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