A standard air conditioner involves a refrigerant that is typically now a fluorinated hydrocarbon, such as CH₂P₂. An air-conditioner refrigerant has the property that it readily vaporizes at atmospheric pressure and is easily compressed to its liquid phase under increased pressure. The operation of an air conditioner can be thought of as aclosed system made up of the refrigerant going through the two stages shown here (the air circulation is not shown in this diagram).Expansion chamberLiquidLiquidPart ACompression (high pressure)During expansion, the liquid refrigerant is released into an expansion chamber at low pressure, where it vaporizes. The vapor then undergoes compression at high pressure back to its liquid phase in a compression chamber.What is the sign of q for the expansion?O Positive.O NegativeSubmit▾ Part BExpansion (low pressure)Compression chamberRequest AnswerWhat is the sign of g for the compression?O Positive.O NegativeSubmitVaporRequest AnswerVapor Part CIn a central air-conditioning system, one chamber is inside the home and the other is outside. Which chamber is where, and why?Match the words in the left column to the appropriate blanks in the sentence on the right. Make the sentence is complete before submitting your answer.Submit▾ Part DO Yes.O No.SubmitoutsidePart Eexpansion chambercompression chamberdecreasesincreasesinsideRequest AnswerRequest AnswerImagine that a sample of liquid refrigerant undergoes expansion followed by compression, so that it is back to its original state. Would you expect that to be a reversible process?1. The expansion chamber isThe process is spontaneous.The process is nonspontaneous.the house and the compression chamber isandSubmit Request AnswerReset HelpThe air surrounding theDuring expansion,is cooled and then distributed througout the house to cool it. If expansion occurredthe cool air would be wastedreleases heat to the surroundings: itoccurs outside so that the released heat can be dissipated by the outside air.Suppose that a house and its exterior are both initially at 31°C. Some time after the air conditioner is turned on, the house is cooled to 24°C. Is this process spontaneous or nonspontaneous?

Given : A Air conditioning unit is given To find : general features of air conditioning and how it…

A standard air conditioner involves a refrigerant that is typically now a fluorinated hydrocarbon, such as CH₂F₂. An air-conditioner refrigerant has the property that it readily vaporizes at atmospheric pressure and is easily compressed to its liquid phase under increased pressure. The operation of an air conditioner can be thought of as a closed system made up of the refrigerant going through the two stages shown here (the air circulation is not shown in this diagram). Expansion chamber Liquid Liquid Part A Compression (high pressure) During expansion, the liquid refrigerant is released into an expansion chamber at low pressure, where it vaporizes. The vapor then undergoes compression at high pressure back to its liquid phase in a compression chamber. What is the sign of q for the expansion? O Positive. O Negative Submit ▾ Part B Expansion (low pressure) Compression chamber Request Answer What is the sign of g for the compression? O Positive. O Negative Submit Vapor Request Answer Vapor

A standard air conditioner involves a refrigerant that is typically now a fluorinated hydrocarbon, such as CH₂F₂. An air-conditioner refrigerant has the property that it readily vaporizes at atmospheric pressure and is easily compressed to its liquid phase under increased pressure. The operation of an air conditioner can be thought of as a closed system made up of the refrigerant going through the two stages shown here (the air circulation is not shown in this diagram). Expansion chamber Liquid Liquid Part A Compression (high pressure) During expansion, the liquid refrigerant is released into an expansion chamber at low pressure, where it vaporizes. The vapor then undergoes compression at high pressure back to its liquid phase in a compression chamber. What is the sign of q for the expansion? O Positive. O Negative Submit ▾ Part B Expansion (low pressure) Compression chamber Request Answer What is the sign of g for the compression? O Positive. O Negative Submit Vapor Request Answer Vapor

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Which of these two processes is more likely to occur? Justify your reasoning: a Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. b C 2 HCOOH(I) + O2(g) = 2 CO2(g)+2 H20(g) B. 2 HCOOH(I) + O2(g) → 2 CO2(g) + 2 H2O(I) d A. Process A because the potential energy of the products is lower Process B because the potential energy of the reactants is higher Process A because the potential energy of the products is higher Process B because the potential energy of the products is lower
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The distance between Sherbrooke and Montreal is 137km. However, a car driving between the two points travels 156km. Of these distances, which one is analogous to a state function?
1.1 mole of O₂ (g) and 2.2 moles of N₂ (g) are spontaneously mixed in a cylinder (volume = 30.0 L) with a movable piston. Assume both gases are ideal. (a) Explain why the mixing of O₂ and N₂ gases is spontaneous in term of chemical potential. (b) Calculate the final pressure (in N m2) of mixture when (i) the mixing occurs isothermally at 298 K; (ii) the initial temperatures of O₂ (g) and N₂ (g) are 306 K and 367 K, respectively, and after mixing, the temperature is equilibrated. State any assumption(s) in your calculations. (c) ) Now, the mixture in (b)(ii) is expanded isothermally and the external pressure is suddenly decreased to a final pressure of 890 Torr, determine whether the process is reversible or not.
What is the ΔHfus of ethanol (46.06 g/mol) which has Kb of 1.99 and freezes at -117.3 °C? 3.72 kJmol-1 4.68 kJmol-1 2.56 kJmol-1 5.91 kJmol-1
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The Δ?vapΔ⁢Hvap of a certain compound is 47.57 kJ·mol−147.57 kJ·mol−1 and its Δ?vapΔ⁢Svap is 67.46 J·mol−1·K−1.67.46 J·mol−1·K−1. What is the boiling point of this compound?
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