What is the pressure of nitrogen in atmospheres of a sample that is at 516.0 mm hg? A) 0.679 atm
B) 5.09
C) 18.4 atm
D) 35.1 atm

Which of the following natural processes is most likely to support the formation of an underwater sinkhole? a pollution buildup from deposited minerals b limestone cave collapsing due to changes in sea level c erosion of large amounts of sand moved by ocean waves d oxidation of rock formed by chemical weathering