How Deep Would the Water Ice Layer Be on the Moon?

In summary, during the Apollo missions, each lunar module used Aerozine-50 fuel to decelerate towards the moon's surface. This fuel is a blend of hydrazine and dimethylhydrazine, with nitrogen tetroxide as the oxidizing agent. The depth of an equivalent water ice layer deposited on the surface, assuming ideal combustion and 2701 kg of fuel, can be determined by spreading it evenly over a circle 1.8 km in diameter. The ice layer can be considered a cylinder due to the scale of the moon's surface being flat.
  • #1
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Homework Statement



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.

Homework 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)

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

Assume cylinder - at this scale surface of the Moon can be considered flat.
 
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1. What is stoichiometry in chemistry?

Stoichiometry is the branch of chemistry that deals with the quantitative relationships between reactants and products in a chemical reaction. It helps determine the amount of products that can be produced from a given amount of reactants and vice versa.

2. How do you calculate stoichiometry?

Stoichiometry calculations involve using balanced chemical equations to determine the mole ratios between reactants and products. The steps typically involve converting the given quantities of reactants or products to moles, using the mole ratios to find the unknown quantity, and then converting back to the desired units.

3. What is the importance of stoichiometry in chemistry?

Stoichiometry is important in chemistry because it helps determine the theoretical yield of a reaction, which is the maximum possible amount of product that can be obtained. It also allows for the efficient use of reactants and helps in predicting the outcome of a chemical reaction.

4. What are the different types of stoichiometry problems?

The two main types of stoichiometry problems are mole-mole and mass-mass problems. In mole-mole problems, the given and unknown quantities are in moles, while in mass-mass problems, the given and unknown quantities are in grams. There are also mole-mass and mass-mole problems which involve converting between moles and grams.

5. What are some real-world applications of stoichiometry?

Stoichiometry is used in various industries such as pharmaceuticals, agriculture, and manufacturing to determine the correct amounts of reactants needed to produce a desired amount of product. It is also used in environmental studies to analyze pollution levels and in forensic science to determine the composition of substances found at crime scenes.

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