Use the References to access important values if needed for this question, In the laboratory you dissolve 14.8 g of magnesium nitrate in a volumetric flask and add water to a total volume of 125 mL.
What is the molarity of the solution?
M.
What is the concentration of the magnesium cation?
M.
What is the concentration of the nitrate anion?
M.

Why are the trends and exceptions to the trends in ionization energy observed?

Select each correct answer. more than one answer may be correct. which of the following is a characteristic of unicellular organisms? they can possess tissues and organs. all of their functions are performed by a single cell. they are usually microscopic. each of their cells is specialized to perform a specific function.

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