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A reversed Brayton cycle with an isentropic pressure ratio of 1.75 is to be used to refrigerate a food locker. The refrigerant is air. The compressor and expander inlet temperatures are 0.00°C and 14.0°C, respectively. Determine
a. The ASC coefficient of performance of this system.
b. The Carnot coefficient of performance for a refrigerator operating between the same temperature limits.
c. The compressor and expander outlet temperatures.
The label claims this solution is 3.0 % (w/w); that is there are 3.0 grams of H2O2 in every 100 grams of solution. What is the molar concentration of this solution. Assume a density of 1.00 g mL
Cerium is often used as a reducing agent. Although it is expensive, it has a high stabile and constant value of E^ o over a PH range from 0 to 7.
If the rate of appearance of Cr2 (SO4)3 is 1.64 mol/min at a particular moment, explain what is the rate of disappearance of C2H6O at that moment. 2 K2Cr2O7 + 8 H2SO4 + 3 C2H6O 2 Cr2(SO4)3 + 2 K2SO4 + 11 H2O
Use Henderson Hassalbalch equation to calculate how much HCl must be added to a liter of buffer that is 1.5 M in acetic acid and 0.75M in sodium acetate to result in a buffer pH of 4.10? Ka = 1.8 x 10-5
upon catalytic hydrogenation unknown Z gives cyclooctane. Oxonolysis of Z followed by reduction with dimethyl sulfide, gives a three0carbon dialdehyde and a five-carbon dialdehyde. Draw the stucture of Z.
a gas has a volume of 25 ml when its pressure .056 atm what will the volume of the gas be at the pressure of 1.00 ?
What mass of sucrose should be combined with 464 g of water to make a solution with an osmotic pressure of 8.35 atm at 320 K? (Assume the density of the solution to be equal to the density of the solvent.)
Suppose that the substance studied in the lab is 62.1% carbon, 27.6% nitrogen and 10.3% hydrogen. Determine the molecular formula for the compound.
The Al2O3 does not react. If the sample residue weighs 2.489 g, what is the mass fraction of Fe2O3 in the original sample?
In the reaction between p-aninophenol and acetic anhydride to form acetaminophen .45 ml of H20 was added. what was the purpose of adding the water
Describe the color change of a positive Benedicts test and What group reacts with the Benedicts reagent
How many grams of oxygen can be added to the balloon before it pops? Assume the balloon had no gas in it before oxygen is added.
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