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The space shuttle utilizes the oxidation of methyl hydrazine, N2H3CH3(l), for propulsion. The oxidation proceeds by the subsequent reaction: 5N2O4(g) + 4N2H3CH3(l) --> 12H2O(g) + 9N2(g) + 4CO2(g) The standard enthalpies of formation are methyl hydrazine +54 kJ/mol dinitrogen tetroxide +9.2 kJ/mol water (g) -242 kJ/mol carbon dioxide -394 kJ/mol Find out the amount of heat generated by the shuttle, in kilojoules, if it is carrying 209.0 kg of methyl hydrazine in its thruster. Presume that methyl hydrazine is the limiting reactant
She records the final temperature of the water as 317K. What is the value of Ccal (calorimeter constant) for the calorimeter.
The resulting solution required 13.73 mL of 0.176 mol L?1 NaOH(aq) to neutralize the excess, unreacted HCl. What was the percentage by mass of Mg(OH)2 in the original sample. When Mg(OH)2 or Al(OH)3 reacts with HCl(aq), the products are a chloride..
1. Which of the following proceeds with syn addition? a. hydroboration of an alkene. b. hydrobromination of an alkene c. radical bromination of an alkane d. contra-markovnikof hydrobromination of an alkene with dialkyl peroxide initiation e. epoxi..
We have a refrigeration unit that works at a pressure of 0.1MPa in the evaporator and 1 MPa in the condenser. The refrigeration unit uses a compressor with an efficiency of 90% and a turbine with 100% efficiency is used to expand the refrigerant a..
find the of X-281, you prepare a 0.075 test solution of X-281. The pH of the solution is determined to be 3.00. What is the of X-281?
200 mL of 0.150 M acid HA are mixed with 100 mL of 0.0800 M NaOH. Calculate the titration constant, kt, of the resulting reaction. Ka = 1.0 x 10^-5
Calculate the mass percent of the solution. Calculate the molality of the solution. Calculate the molarity of the solution
one thousand kilograms per hour of a mixture containing equal parts by mass of methanol and water is distilled. product
What volume (in mL) of 25.0 M hydrochloric acid is required to prepare the volume of 17.0 M hydrochloric acid you found you needed in A to neutralize 4.0 grams of aluminum (III) hydroxide
Calculate the mole fraction of octane in the vapor at the above temperature.
At 25 ºC, the vapor pressure of water is 23.8 torr. What is the vapor pressure of a solution prepared by dissolving 97.0 g of C6H12O6 (a nonvolatile solute) in 170 g of water.
question xenon gas is released during a certain chemical reaction and pushes back the atmosphere with a change in
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