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Chemistry question (Stoichiometry)

  1. Sep 30, 2010 #1
    1. The problem statement, all variables and given/known data

    During the Apollo missions, each lunar module decelerated toward the surface of the moon by the oxidation of "Aerozine-50" fuel. Aerozine-50 is a blend of hydrazine, N2H4, and dimethylhydrazine, CH3()2N2H2, 50% by mass in each component (known to infinite precision). Nitrogen tetroxide, N2O4, was used as the oxidizing agent.

    c. Determine the depth in centimeters of the equivalent water ice layer (density = 0.92 g/cm3) deposited on the surface if spread evenly over a circle 1.8 km in diameter.

    2. Relevant equations

    Assume that 2701 kg of Aerozine-50 was used in each deceleration, and that each component underwent ideal combustion according to the following unbalanced reactions:
    N2H4+N2O4→N2+H2O (1)
    CH3()2N2H2+N2O4→N2+H2O+CO2 (2)

    3. The attempt at a solution

    All I'm asking is if the ice layer is going to be cylinder or a sphere? I know how to do the problem i'm just not sure which they'd like.
  2. jcsd
  3. Oct 1, 2010 #2


    User Avatar

    Staff: Mentor

    You have wrong parentheses in dimethylhydrazine, it should be (CH3)2N2H2.

    Assume cylinder - at this scale surface of the Moon can be considered flat.
    Last edited by a moderator: Aug 13, 2013
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