What species are present in solution when the following compounds dissolve in water?

Question

What species are present in solution when the following compounds dissolve in water? Separate species with a space. Write cations first followed by charge in parentheses, then anions followed by charge in parentheses, and finally molecules (in any) e.g. "X(+) Y(2-) E3Z4". Do not include H2O in your answer which is always present in aqueous solutions.

sodium dichromate

copper(II) chloride

barium hydroxide

methanol

sodium hydrogen carbonate

iron(III) nitrate

Answer 1

2Na(+) + Cr2O7(2-)

Cu(2+) + 2Cl(-)

Ba(2+) + 2OH(-)

CH3O(-) + H(+)

Na(+) + HCO3(-)

Fe(3+) + 3NO3(-)

I don't understand the last part of the question

Answer 2

2 Na(+ ) and Cr2O7(2-)

Cu(2+ ) and 2 Cl(-)

Ba (2+) and 2 OH (-)

CH3O(-) and H (+)

Na(+) and HCO3 (-)

Fe(3+) and 3 NO3 (-)