Which combination will produce a precipitate? A) Pb(NO3)2 (aq) ...

[serike]

Which combination will produce a precipitate?
 
  A) Pb(NO3)2 (aq) and HCl (aq)
  B) Cu(NO3)2 (aq) and KC2H3O2 (aq)
  C) KOH (aq) and HNO3 (aq)
  D) AgC2H3O2 (aq) and HC2H3O2 (aq)
  E) NaOH (aq) and Sr(NO3)2 (aq)

Question 2

For a given reaction, H = +74.6 kJ/mol, and the reaction is spontaneous at temperatures above the crossover temperature, 449 K. The value of S = ________ J/mol  K, assuming that H and S do not vary with temperature.
 
  A) 166
  B) 6020
  C) -166
  D) -6020
  E) 3.35  104

Question 3

What fraction of the volume of each corner atom is actually within the volume of a face-centered cubic unit cell?
 
  A) 1
  B) 1/2
  C) 1/4
  D) 1/8
  E) 1/16

[lkanara2]

Answer to Question 1

A

Answer to Question 2

A

Answer to Question 3

D

[serike]

TY

[lkanara2]

You're welcome