Exam2Review - Exam 2 Study Questions for Review Sessions...

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Exam 2 Study Questions for Review Sessions Hydrazine, N 2 H 4 , is a commonly used liquid rocket fuel. The combustion of hydrazine is shown below. Let’s assume you are going to use this as fuel for a rocket exploring the atmosphere of another planet that is only 5% oxygen and 95% nitrogen. N N H H H H O O + N N + O H H 2 1) Calculate the AF ratio for hydrazine under these conditions. 2) If you start with 5.0 grams of hydrazine and 5.0 grams of oxygen, what will be the limiting reactant? With this mixture, how many grams of N 2 is produced? 3) Consider the following mixture of reactants. Draw what the product mixture would look like and determine what the limiting reactant is. O N H 4) Given the following information, estimate the amount of energy released in this combustion. Bond Bond dissociation energy (kJ/mol) N-H 391 N-N 160 N≡N 945 O-H 467 O=O 498
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5) In the laboratory, the N-N bond in hydrazine can be spit by irradiation with light from a laser. Calculate the longest wavelength of light needed to cleave the N-N bond.
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