Write the balanced net ionic equation for the reactions that occur when the given aqueous solutions are mixed. Include the physical states. A. copper(II) sulfate, CuSO4 , and potassium hydroxide, KOH net ionic equation: B. lithium carbonate, Li2CO3 , and aluminum nitrate, Al(NO3)3 net ionic equation: C. sodium phosphate, Na3PO4 , and barium chloride, BaCl2 net ionic equation:

1. Cu(2+) [solution] + 2OH(-) [solution]= Cu(OH)↓ [solid]

2. 3CO3(2-) [solution] + 2Al(3+) [solution] + 3H2O [liquid] = 2Al(OH)3↓ [solid] + 3CO2↑ [gas]

2. 2PO4(3-) [solution] + 3Ba(2+) [solution] = Ba3(PO4)2↓ [solid]

atomic mass = 39

number of neutrons = 20

number of protons= 19

electronic configuration = 1s2 2s2 2p6 3s2 3p6 4s1

the number of electron in first shell = 2

number of electrons in n=3 shell = 8