Choose one correct answer in each drop-down list Selenium (At.# 34) is
an
example of a(n)

How manyatoms of mercury are in 1.4214e+1 ml sample

Apump contains 0.5 l of air at 203 kpa. you draw back on the piston of the pump, expanding the volume until the pressure reads 50.8 kpa. what is the new volume of the air pump

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