Asked by Anonymous

Which of the following substances is a liquid fuel used in rocket engines A. liquid oxygen
B. Ammonia
c. potassium perchiorate
D. codium nitrate
Answered by PsyDAG
Indicate your <I>specific</I> subject in the "School Subject" box, so those with expertise in the area will respond to the question.
Answered by Ms. Sue
Northwestern is NOT the name of your school subject,
Answered by DrBob222
http://en.wikipedia.org/wiki/Liquid-propellant_rocket#Propellants
Scroll to propellants and read.
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