HELP ME PLZ PLZ . Apply Look back at the oxygen atom illustrated on the first page of this section. Is the second energy level of the oxygen atom full ? Explain.

Which part of a feedback mechanism is able to monitor the conditions outside of cells and usually uses nerve cells to relay this information to an intergrating center

If an area has high air pressure and low humidity, what type of weather will it most likely have? plz !

For the reaction shown, find the limiting reactant for each of the following initial amounts of reactants. 4al(s)+3o2(g)→2al2o3(s) a) 1 molal, 1 mol o2 b) 4 molal, 2.6 mol o2 c) 16 molal, 13 mol o2 d) 7.4 molal, 6.5 mol o2