Chemistry question (Stoichiometry)

by GOsuchessplayer
Tags: chemistry, stoichiometry
GOsuchessplayer is offline
Sep30-10, 09:34 PM
P: 11
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.
Phys.Org News Partner Science news on
Going nuts? Turkey looks to pistachios to heat new eco-city
Space-tested fluid flow concept advances infectious disease diagnoses
SpaceX launches supplies to space station (Update)
Borek is offline
Oct1-10, 02:29 AM
Borek's Avatar
P: 22,671
You have wrong parentheses in dimethylhydrazine, it should be (CH3)2N2H2.

Assume cylinder - at this scale surface of the Moon can be considered flat.

Register to reply

Related Discussions
Chemistry: Stoichiometry Biology, Chemistry & Other Homework 7
Chemistry stoichiometry problems Biology, Chemistry & Other Homework 8
Chemistry stoichiometry? Biology, Chemistry & Other Homework 2
Chemistry (Stoichiometry help!) Biology, Chemistry & Other Homework 1
Chemistry - stoichiometry, solutions Biology, Chemistry & Other Homework 1