At a depth of 40 m, the water pressure is 500 kpa. a diver breathing air (78% n2, 21% o2) at this depth would have what partial pressure of oxygen in his lungs?

Identify one disadvantage to each of the following models of electron configuration: dot structures arrow and line diagrams written electron configurations type in your answer below.

Needthe meter is the standard unit for: 1) height 2) length 3) weight 4) mass

As we move from left to right across the periodic table, what is the general trend? a) atomic radii increase. b) electronegavitiy decreases. c) nuclear shielding increases. d) metallic character decreases.