Groups of college students pursue the study of chemical compounds with similar reactivity. if they wish to do an in-depth background study on periodic trends, they should most likely a) consult only their chemistry professors. eliminate b) rely exclusively on each other’s background knowledge. c) consult chemistry professors, chemistry textbooks, and scientific journals. d) consult chemistry professors and further study through scientific-fiction movies.

You are traveling in a car going at a constant speed of 100km/h down a long, straight highway. you pass another car going in the same direction which is traveling at a constant speed of 80km/h. as measured from your car's reference frame this other car is traveling at −20km/h. what is the acceleration of your car as measured from the other car's reference frame? what is the acceleration of the other car as measured from your car's reference frame?

Because air contracts as it cools, the air pressure inside a freezer is typically lower than on the outside. why do ice cubes inside a freezer tend to shrink over time? a. the ice dissolves oxygen from the air, forming a denser crystalline matrix. b. the ice reacts chemically with carbon dioxide in the air, forming gaseous carbon compounds. c. the ice melts, and then the liquid freezes as ice crystals on the bottom of the freezer. d. the ice sublimes, and then the water vapor deposits as ice crystals on the sides of the freezer.

What are the dimensions of the cross section that passes through the points a, f, g, and d?