Which of these sets of elements have similar physical and chemical properties?

10-14. (a) when 100.0 ml of weak acid ha were titrated with 0.093 81 m naoh, 27.63 ml were required to reach the equivalence point. find the molarity of ha. (b) what is the formal concentration of a- at the equivalence point? (c) the ph at the equivalence point was 10.99. find pk. for ha. (d) what was the ph when only 19.47 ml of naoh had been added?

Give the orbital configuration of the phosphorus (p) atom.

If 22.5 liters of oxygen reacted with excess of hydrogen, how many liters of water vapor could be produced?