For the reaction, 2 NH3(g) (g) + 3 (g), one would expect A) H ...

[saliriagwu]

For the reaction, 2 NH3(g)  (g) + 3 (g), one would expect
 
  A) H to be negative and S to be negative.
  B) H to be negative and S to be positive.
  C) H to be positive and S to be negative.
  D) H to be positive and S to be positive.

Question 2

What are the spectator ions in the reaction between Mg(OH)2 (aq) and HCl (aq)?
 
  A) Mg+2 and H+
  B) H+ and OH-
  C) Mg+2 and Cl-
  D) H+ and Cl-
  E) OH- only

Question 3

How many atoms are contained in a face-centered cubic unit cell?
 
  What will be an ideal response?

[ilianabrrr]

Answer to Question 1

D

Answer to Question 2

C

Answer to Question 3

4

[saliriagwu]

Excellent

[shailee]

Wow, this really help