How to write solubility equilibrium and solubility-product constant expression?

Chemistry help please!?

• Please help me answer these. Can you include the work as best you can as well? Thanks! 1. What mass of KBr would be needed to prepare 500mL of 1.5M solution? 2. If 750.0 ML of an AgNO3 reacts with enough copper to produce 0.52g of Ag by single displacement, What is the molarity of AgNO3? given equation: 2AgNO3+Cu --> 2Ag+Cu(NO3)2 3.When ammonia dissolves in water, it reaches the equilibrium describe by this equation NH3(aq)+H2O(L) <--> NH4^+(aq)+OH^-(aq). The value of the equilibrium constant is 1.8x10^-5. If [NH3}=0.25M and [NH4]=0.075M, what is the concentration of OH^-? 4.write the product solubility constant for MgBr2- Write the equilibrium constant expression, forward reaction, and reverse reaction for the following- 5. AgCl(s) <=> Ag^+(aq) + Cl^- (aq) 6. H2(g)=Cl2(g) <=> 2HCl(g)

• Answer:

  And, what here ridiculous?