Identify the equations that show ionization. Check all that apply.
A) NaCl(s) → Na+ (aq)+Cl(aq)

B) HC (9)+H2O(l) → H30+ (aq) + Cr (aq)

C) O2(g) → O2(aq)

D) CO2(g) + 2H2O(l) → HCO3(aq) +H30+ (aq)

E)CaCl2(s) → Ca2+ (aq) + 2Cr (aq)