1) how could you separate gold from a mixture of zinc andgold?

2) complete and balance the following chemical reactions?

Pb(NO3)2(aq)+2KCL(aq)->

Ba(NO3)2(aq)+Na2SO4(aq)->

K2CO3(aq)+Ba(NO3)2(aq)->

HCl(aq)+AgNO3(aq)->

3) Using a hydrochloric acid solution, how could you determinewhether a white powder was zinc sulfide or silver nitrate? write balance equation:

ZnS(s)+2HCl(aq)->

AgNO3(s)+HCL(aq)

4) complete and balance equation:

HCl(aq)+Na2SO3(s)->

BaCl2(aq)+K2CrO4(aq)->