How many moles of sodium chloride (nacl) solute are in 205 grams of a 92.5 percent by mass solution?
a.) 1.92 mol nacl
b.) 2.63 mol nacl
c.) 3.24 mol nacl
d.) 7.71 mol nacl

Which equation represents a fission reaction? o "9n+h—150 o 235u + n—190cs + rb+25 o be + he—1c + in o 28 np —> 2390 pute

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

Particle model to predict what will happen if a sharp object creates a hole in the soccer ball