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The preparation of NO2(g) from N2(g) and O2(g) is an endothermic reaction: N2(g)+O2(g) yields NO2(g); (unbalanced) The enthalpy change of reaction for the balanced equation (with lowest whole-number coefficients) is H 67.7 kJ. If 2.50 102 mL of N2(g) at 100.C and 3.50 atm and 4.50 102 mL of O2(g) at 100.C and 3.50 atm are mixed, what amount of heat is necessary to synthesize NO2(g)?
The diode's saturation current is given to be 10-12 A and the I-V curve is shown in Figure P7.2.6. Find the current through the diode in the circuit by graphical analysis.
Consider the following statements: "Heat is a form of energy, and energy is conserved. The heat lost by a system must be equal to the amount of heat gained by the surroundings.
Two coupled synchronous machines are used as a motor-generator set to link a 25-Hz system to a 60-Hz system. Find the three highest speeds at which this linkage would be possible.
A closed rigid vessel that contains a pure fluid is heated until the contents become saturated liquid. Determine whether the initial state is superheated vapor, compressed liquid, or vapor/liquid.
What is the armature current corresponding to the maximum torque?
In the manufacture of methyl ethyl ketone from butanol, the product is separated from unreacted butanol by distillation. The feed to the column consists of a mixture of 0.90 mol fraction MEK, 0.10 mol fraction 2-butanol, with a trace of trichloroe..
Calculate the flow rates of burets Y and Z. Assume the flow rates remain constant during the experiment.
Carolina (H2C=CHCHO) is made by selective oxidation of propylene at 2 bar, 350 °C using a molybdenum, iron, and bismuth catalyst on a silica support
You are requested to flash the mixture so that the liquid stream is 85% of the inlet (by mol). If the pressure is 1.5 bar, what temperature should be used?
Does this distribution fit a normal distribution curve?
Assume you. have a photodctcctor with a current rcsponsi vity of 5 AJW. A continuous wave HeNe laser with wavelength of 632.8 nm and spot size of 0.5 mm2 is incident on the active area of the detector. Assume that 6.37 x 1021 photons per m..
Assume that the absorbance of each form of the dye is linearly related to its pH. Devise a method to measure the pH of the dye.
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