Calculate pCd2+ at each of the given points in the titration of 40.00 mL of 0.0080 M Cd2+ with 0.0080 M EDTA in the presence of the auxiliary complexing agent NH3 . The solution is buffered at a pH of 11.00 and the NH3 concentration is fixed at 0.100 M. The formation constant for the Cd2+−EDTA complex is Kf=2.9×1016 .

1)each group 16 element has how many valence electrons? ( )4 ( )6 ( )8 ( )16 2)how many dots appear in the dot structure for calcium ion, ca2+? ( )zero ( )one ( )two ( )eight 3) which of the following atoms forms a cation to obtain an octet of outer shell electrons? ( )magnesium ( )oxygen ( )fluorine ( )helium 4) an al3+ ion contains 13 protons and 10 electrons. ( )true ( )false 5) valence and non-valence electrons are represented in lewis dot structures. ( )true ( )false

What material does not melt at any temperature

In the lab, ammonia was mixed with water to form ammonium hydroxide. what is/are the reactant(s)? o water and ammonia o ammonia o ammonium hydroxide need