Calculate the [h3o'j in a solution that has a ph of 9.11. a) 7.8 x 10-10 b) 1.3 x 10-5 c) 9.1 x 10-9 d) 0.96 e) 0.69

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

How many moles of carbon dioxide will form if 2.5 moles of c3h8 is burned

Identify the electromagnets with poles that are reversed from the electromagnet shown above