I need help with this question Give an example of a situation in your life in which you depend on adequate testing and evaluation in a product design to keep you safe.

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

Which rate indicates the number of children that would be born per woman if she were to live to the end of her child bearing years