albertjosecuello albertjosecuello 13-10-2021 Chemistry contestada I need help with this problems to know if they have reaction or no reaction. 1) Cr(s) +Co(NO3)2 (aq). 2) Ni(s) + Li2CO3(aq) 3) Co(s) + HCl(aq) 4) Cd(s) + H2SO4(aq)?