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1. Reversed Stirling cycle air conditioners were used to cool deep mines until about 1930. If the temperature in the mine was 150.°F and the temperature of the air outside the mine was 60.0°F, determine the reversed Stirling ASC coefficient of performance for the air conditioner.
2. A reversed Stirling cycle heat pump is driven by a 14.0 hp electric motor. It produces a heat transfer rate of 75.0 × 103 Btu/h into the high temperature region at 80.0°F from an environment at 50.0°F. Determine
a. The actual coefficient of performance of the heat pump.
b. The reversed Stirling ASC coefficient of performance for this unit.
The formation constant Kf for the complex ion Zn(OH)42- is 2.8 1015. What is the concentration of zinc ion, Zn2+, in a solution that is initially 0.50 M in Zn(OH)42-
a new element setonium has been isolated and consistent with some predictions is nonradioactive. while only nanogram
What is the pH of a solution obtained by dissolving two extra-strength aspirin tablets, containing 500 mg of acetylsalicylic acid each, in 300 {mL} of water
Identify each of the following as a substance that is part of the citric acid cycle, electron transport, or both:
What is the equilibrium concentration of Cl at 1000 ? What is the equilibrium concentration of COCl2 at 1000 ?
What mass of LP gas is necessary to heat 1.3 of water from room temperature (25.0 ) to boiling (100.0 )? Assume that during heating, 16% of the heat emitted by the LP gas combustion goes to heat the water.
small protein in 5.00mL aqueous solution has an osmotic pressure of 7.85 torr at 23.1C. What is the molar mass of the protein?
Explain In preparing soap you dissolved 12.5 grams of sodium hydroxide in 32 ML of de-ionized water. The product was a solid cake of soap. Define what happened to the water you added when preparing your soap
What is the molarity of the solution resulting from the dissolution of 209 g glucose (C6H12O6) in 250 mL water
12.0 moles of a gas (SO2) under non-ideal conditions was measured to have a pressure of 1.00*10^2 atm in a 3.00 L container. What is the temperature. the van der Waals constants for SO2 are a= 6.865L atm /mol and b=0.05679L/mol.
With regard to the solutions you discarded in this experiment identify the compounds in the filtrate discarded in step 19.
Utilize the thermodynamic data in Appendix B to compute the standard cell potential as well as the equilibrium constant at 25°C for the cell reaction in a direct methanol fuel cell
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