A restaurant sells cheeseburgers for $5.00 and French fries for $3.00. An equation that represents the number of cheeseburgers and French fries that can
be bought for $20.00 is 5x + 3y = 20. Rearrange the equation to solve for the
number of French fries. *

Acetic acid, hc2h3o2, dissolves and completely dissociates in water and a solvation sphere of water molecules forms around the ions. this solute-solvent interaction

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

Which electron configuration represents the electrons in an atom of sodium in the ground state at stp