Acalorimeter was used to measure the heat change when an ionic compound dissolves in water. the final mass of the contents of the calorimeter was 50.89 g and the change in temperature was 1.80 degree c.

calculate the heat change of the calorimeter contents given that its specific heat is 4.11 j(g c)

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

Choose all the answers that apply. as ocean depth increases, temperature decreases temperature increases pressure increases pressure decreases salinity increases density increases

Particles vibrate in a rigid structure and do not move relative to their neighbors.