What atom makes up the end of a pencil

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?

Draw the aromatic compound toluene (methylbenzene). show all hydrogen atoms, including those on the ring.

What is the chemical name of the compound ti2o3? use the list of polyatomic ions and the periodic table to you answer.