Given the following activity series: most active Ba,Mn,Cr,Cd,Sn,H,Bi,Au, least active 1. 3Mn(s)+2Cr3+(aq)3Mn2+(aq)+2Cr(s) 2. 2Bi(s)+6H+(aq)3H2(g)+2Bi3+(aq) 3. 3Cd2+(aq)+2Au(s)3Cd(s)+2Au(aq) 4. Sn(s)+2H+(aq)H2(g)+Sn2+(aq) 5. 2Cr3+(aq)+3Ba(s)3Ba2+(aq)+2Cr(s) 6. 2Au3+(aq)+3H2(g)6H+(aq)+2Au(s) 7. 3Mn2+(aq)+2Bi(s)3Mn(s)+2Bi2+(aq) Predict which of the following reactions occur (use yes or no for the answer)