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Author Question: Which of the following is insoluble in water at 25 C? A) Mg3(PO4)2 B) Na2S C) (NH4)2CO3 D) ... (Read 99 times)

melly21297

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Which of the following is insoluble in water at 25 C?
 
  A) Mg3(PO4)2
  B) Na2S
  C) (NH4)2CO3
  D) Ca(OH)2
  E) Ba(C2H3O2)2

Question 2

Boric acid condenses to form tetraboric acid according to the equation ________.
 
  A) 4H3BO3 (s)  2H2B2O7 (s) + 3H2O (g)
  B) 2H3BO3 (s)  HB2O2 (s) + 4H2O (g)
  C) 4H3BO3 (s)  HB4O8 (s) + 4H2O (g)
  D) 2H3BO3 (s)  H2B4O7 (s) + 3H2O (g)
  E) 4H3BO3 (s)  H2B4O7 (s) + 5H2O (g)

Question 3

How many total electrons are in the Li+ ion?
 
  A) 2
  B) 3
  C) 4
  D) 7
  E) 8

Question 4

Crystalline solids differ from amorphous solids in that crystalline solids have ________.
 
  A) appreciable intermolecular attractive forces
  B) a long-range repeating pattern of atoms, molecules, or ions
  C) atoms, molecules, or ions that are close together
  D) much larger atoms, molecules, or ions
  E) no orderly structure


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6ana001

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melly21297

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Reply 2 on: Aug 27, 2018
Gracias!


mohan

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Reply 3 on: Yesterday
:D TYSM

 

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