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Author Question: Which of the following contributes least to the problem of photochemical smog? A) nitrogen oxides ... (Read 24 times)

ericka1

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on: Aug 27, 2018
Which of the following contributes least to the problem of photochemical smog?
 
  A) nitrogen oxides emitted by cars
  B) hydrocarbons emitted by cars
  C) warm, sunny days
  D) cool, wet days

Question 2

Running an engine with a richer (more fuel, less air) combustion mixture lowers nitrogen oxide emissions from automobiles. The problem is that
 
  A) hydrocarbon emission increases.
  B) carbon monoxide emission increases.
  C) fuel efficiency decreases.
  D) all of the above occur.


leahm14

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

D

Answer to Question 2

D


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