A mixture of He , Ne , and Ar has a pressure of 12.6 bar at 28.0 °C. The partial pressure of He is 2.93 bar and the partial pressure of Ar is 1.80 bar . Calculate the partial pressure of Ne .

What effect would average population growth have on land usage? a. urban use of land would rise to more than 30 percent of available land. b. industrial use of land would rise to more than 30 percent of available land. c. the percentage of available land used as cropland would stay the same. d. cropland would fall to about 10 percent of available land.