The number of phosphorus atoms in one molecule of H3PO4 is ...

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The number of phosphorus atoms in one molecule of H3PO4 is ________.
 
  A) 1
  B) 8
  C) 6.02  1023
  D) 4.8  1023

Question 2

Adding helium to the reaction vessel will ________.
 
  2H2S (g) + 3O2 (g) = 2SO2 (g) + 2H2O (g)
  A) shift the reaction to the right
  B) shift the reaction to the left
  C) have no effect
  D) cannot be determined, since the temperature is unknown

Question 3

The law of combining volumes applies only to
 
  A) gases.
  B) liquids.
  C) solids.
  D) gases and liquids.

[31809pancho]

Answer to Question 1

A

Answer to Question 2

C

Answer to Question 3

A

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Thank you!

[31809pancho]

Always glad to help...