Cual sera la contestacion

14. complete and balance the equations for the single displacement reactions. a. zn + pb(no3)2 -> b. al + niso4 -> 15. complete and balance the equations for the double displacement reactions. a. agno3(aq) + nacl(aq) -> b. mg(no3)2(aq) + koh(aq) -> 16. complete and balance the equations for the combustion reactions. a. __ ch4 + o2 -> b. __ c3h6 + o2 -> c. + o2 ->

Needthe meter is the standard unit for: 1) height 2) length 3) weight 4) mass

12. calculate the hydroxide ion concentration of a solution with ph = 3.25. show all calculations leading to an answer