Northwestern

Which of the following substances is a liquid fuel used in rocket engines A. liquid oxygen
B. Ammonia
c. potassium perchiorate
D. codium nitrate

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  1. Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.

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    posted by PsyDAG
  2. Northwestern is NOT the name of your school subject,

  3. http://en.wikipedia.org/wiki/Liquid-propellant_rocket#Propellants
    Scroll to propellants and read.

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