What is the value of the equilibrium constant, K, at 25 oC for the reaction between the pair: Cr(s) and Fe2 (aq) to give Fe(s) and Cr3 (aq)

Explain how the integumentary system plays a crucial role in the ability to maintain homeoestasis

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

At 450 mm hg a gas has a volume of 760 l, what is its volume at standard pressure