Recall that the total pressure of air at sea level is about 1 atm, and that air is 20.9 percent oxygen. What is the partial pressure of oxygen in air? How does it compare to the oxygen in the tank?

What will most likely happen when two bromine atoms bond together?

Diffraction is when light is bent around obstructions. which of the these observation about clouds would indicate diffraction? a) after rain storms, you can sometimes see rainbows. b) clouds are white or gray and cannot be seen through. c) on a cloudy day, the temperature tends to be cooler than a sunny day. d) the edges of dark clouds appear lighter. this

12. calculate the hydroxide ion concentration of a solution with ph = 3.25. show all calculations leading to an answer