Which of the following single-displacement reactions will actually occur if the indicated reactants are mixed? Select all that apply. Cu(s)+Pb(NO3)2(aq)Cu(NO3)2(aq)+Pb(s)3Mg(s)+2AlCl3(aq)3MgCl2(aq)+2Al(s)Ni(s)+2AgNO3(aq)Ni(NO3)2(aq)+2Ag(s)Zn(s)+MgCl2(aq)ZnCl2(aq)+Mgg(s)