Look at the reaction below. H2SO4(aq) + Mg(s)->MgSO4(aq) + H2(g)

Which substance is the acid in the reaction?

Mg(s)

H2(g)

MgSO4(aq)

H2SO4(aq)

Mark this and return

Which of the dna typing techniques do you think you would choose if you had to analyze a dna sample? why?

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

Which common material is an example of a polymer? (25 pts) a. steel b. plastic c. petroleum d. rubbing alcohol