what happen when carbon dioxide is passed through water for short time and for long time?explain with chemical reaction.

The agent of mechanical weathering in which rock is worn away by the grinding action of other rock particles is call

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 bromine are needed to produce 3.23 moles of potassium bromide