Astudent conducts an experiment to determine the effect of adding salt on the boiling temperature of water. the
results are shown below.

If the atomic mass of an atom is 34 and the atom contains 13 protons, how many neutrons does the atom contain?

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 is the mass of 0.46 mol of mgcl2