Which of the following elements are the least reactive (PICK TWO)? explain your reasoning. chlorine, Cl; barium, Ba; copper, Cu; rubidium, Rb; argon, Ar

Any info on neptunes spot? i need it for a project.

Which type of fossil does this image depict?

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