predict possible reactions and write products and balance equation, chemistry homework help

Based on the activity series, predict whether each of the following possible reactions will occur. For each reaction that will occur, write the products and balance the equation. Must show reasoning for all answers.Ni(s) + H2O(l) Br2(l) + KI(aq) Au(s) + HCl(aq) Cd(s) + HCl(aq) Mg(s) + Co(NO3)2(aq)