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Author Question: The combustion of ammonia in the presence of excess oxygen yields NO2 and H2O: 4 NH3 (g) + 7O2 ... (Read 72 times)

yoroshambo

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on: Aug 27, 2018
The combustion of ammonia in the presence of excess oxygen yields NO2 and H2O:
 
  4 NH3 (g) + 7O2 (g)  4 NO2 (g) + 6 H2O (g)
 
  The combustion of 14.4 g of ammonia consumes ________ g of oxygen.
  A) 13.5
  B) 28.8
  C) 54.1
  D) 47.3
  E) 94.6

Question 2

The photoelectric effect is ________.
 
  A) the total reflection of light by metals giving them their typical luster
  B) the production of current by silicon solar cells when exposed to sunlight
  C) the ejection of electrons by a metal when struck with light of sufficient energy
  D) the darkening of photographic film when exposed to an electric field
  E) a relativistic effect


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fromAlphatoOmega22

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Reply #1 on: Aug 27, 2018
Answer to Question 1

D

Answer to Question 2

C


yoroshambo

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Reply 2 on: Aug 27, 2018
Gracias!

shewald78

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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