The pressure at triple point of water is 4:56mm of Hg. Under . this Condition, the volume of liquid water per gram is 1.0001 cm3 and that of ice is 1.0906cm3. Find out the temperature of the triple point LF = 80 cal/gm.

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

0.09 moles of sodium sulfate in 12 ml of solution

How are isotopes of the same chemical element alike? how are they different?