The vapor pressure curves for R-245fa and R-1336mzz-Z are presented below. AC units can operate under different pressure ranges based on the region of the compressor. If the two refrigerants are held at 2 MPa and 130°C, which submicroscopic representation best represents the refrigerants under those conditions? pour pressure, MP 4.00 3.50 3.00 2.50 2.00 1.50 1.00 0.50 0.00 0 2 -82456-R1336m2 mO Temperature, C 100 120 140 160 180

The vapor pressure curves for R-245fa and R-1336mzz-Z are presented below. AC units can operate under different pressure ranges based on the region of the compressor. If the two refrigerants are held at 2 MPa and 130°C, which submicroscopic representation best represents the refrigerants under those conditions? pour pressure, MP 4.00 3.50 3.00 2.50 2.00 1.50 1.00 0.50 0.00 0 2 -82456-R1336m2 mO Temperature, C 100 120 140 160 180

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...

See similar textbooks

Similar questions

What final pressure must be applied to a sample of gas having a volume of 635 mL at 30.oC and 106 kPa pressure to permit the expansion of the gas to a volume of 302 mL at 30.oC? (223 kPa)
For N2(g), Cpm is nearly constant at 3.5R = 29.1 J/(mol.K) for temperatures in the range 100 to 400 K and low or moderate pressures. (a) Calculate AU and AH for the reversible adiabatic compression of 2 g of N2(g) from 350 torr and 800 cm to a final volume of 150 cm. Assume perfect-gas behavior. Seçtiğiniz cevabın işaretlendiğini görene kadar bekleyiniz. A AU= 436.49 J AH = 124.64 AU= 436.49 J AH = 611.10 J AU= 89.03 J AH = 124.64J AU= 89.03 J AH 611.10 J
Complete the ideal gas tables. All answers shall be in 4 decimal places. P (kPa) 125 p (kgm/m³) o (m³/kgm) R (kJ/kgm-K) T (K) GAS MW A 17 295 2.22 0.189 370 GAS MW R (kJ/kgm-K) G (k]/kgm-K) G (k]/kgm-K) k C 28.97 1.4 1.7549 1.4782
3. A gas contained within a closed piston-cylinder assembly undergoes three processes in series: Process 1-2: Constant volume from P₁ = 1 bar, V₁ = 4 m³ to state 2, where P₂ = 2 bar; Process 2-3: Compression to V3 = 2 m³, during which the pressure-volume relationship is PV = constant; Process 3-4: Constant pressure to state 4, where V4 = 1 m³; (a) Sketch the processes in series on P-V coordinates. (b) Evaluate the magnitude of work in kJ for EACH process. To make the unit consistent, you might need to convert the unit of pressure from bar to Pa.
Deduce the relation between the pressure and mass density, rho, of a perfect gas of molar mass M. Confirm graphically, using the following data on dimethyl ether at 25°C, that perfect behavior is reached at low pressure and find the molar mass of the gas. p/kPa p/(kg m-³) 12.223 0.225 25.20 0.456 36.97 0.664 60.37 1.062 85.23 1.468 101.3 1.734
P1A.6 The molar mass of a newly synthesized fluorocarbon was measured in a gas microbalance. is device consists of a glass bulb forming one end of a beam, the whole surrounded by a closed container. e beam is pivoted, and the balance point is attained by raising the pressure of gas in the container, so increasing the buoyancy of the enclosed bulb. In one experiment, the balance point was reached when the fluorocarbon pressure was 327.10Torr; for the same setting of the pivot, a balance was reached when CHF3 (M = 70.014 g mol−1) was introduced at 423.22 Torr. A repeat of the experiment with a di erent setting of the pivot required a pressure of 293.22 Torr of the uorocarbon and 427.22 Torr of the CHF3. What is the molar mass of the fluorocarbon? Suggest a molecular formula.
We know that for an ideal gas Cp,m = Cv,m + R. %3D The general relationship for any gas can be written, for 1 mole, as Cp,m = Cy,m + (Yn") a²VmT` k (equation-1) Where Vm is the molar volume (the volume of 1 mole of the gas, V/n). a is the coefficient of volume expansion and is given by: a = where the partial derivative of V with respect to T is calculated ƏT assuming P is constant And K is the coefficient of volume expansion and is given by: k = GO where the partial derivative of V with respect to P is calculated assuming T is constant. Note the minus in the definition. Prove that equation-1 reduces to the result derived in class for an ideal gas by calculating (A²V¼T\ k
Find AS (cal/K) when 6.4 mol of some gas O2 is heated from 1.2 K to 2.4 K with P held fixed at 1.00 atm. Where Cpm=a+bT,where value of a=9.46 cal.mol1K1 and b=0.00135 cal.mol1K2. Answer:
Q1/ The ideal gas equation of state is given by: PV = nRT Where: P is the pressure (atm), V is the volume (L), 7 is the temperature (K), R=0.08206 (L atm)/(mol K) is the gas constant, and n is the number of moles. Real gases, especially at high pressures, deviate from this behavior. Their responses can be modeled with the van der Waals equation: nRT V-nb Where a and b are material constants. For CO₂ a 3.5924 L'atm/mol², and b=0.04267 L/mol. Calculate P from both equations for CO₂ gas with 40 values of V between 0.01 and 1.5 and display the results in: 1- Three-column table where the values of Vand both P are displayed in the first, second, and third columns, respectively. 2-Plot V versus both P in two different plots in the same figure with a solid line, black color, with circle marker. Add a title, labels, and the grid to the plot. Make all texts bold with font size of 13. Take T=298K and n=3 moles. nº a + √² P
8. Consider a gas with the equation of state P - RT(1/V+ a/V + b/V). Usually one finds the critical pressure P, critical temperature T, and critical molar volume Vm, in terms of a, b, and R. Here solve for a and b in terms of critical constant(s) and then evaluate the critical pressure. Why can you not determine the critical temperature from the criteria of an inflection point? [a --Vcl
An ideal gas (the system) is contained in a flexible balloon at a pressure of 1 atm and is initially at a temperature of 20.°C. The surrounding air is at the same pressure, but its temperature is 25°C. When the system has equilibrated with its surroundings, both systems and surroundings are at 25°C and 1 atm. In changing from the initial to the final state, which one of the following relationships regarding the system is correct? Select one: а. DH %3D 0 b. q > 0 C. W > 0 d. DE < 0 e. DE = 0
(1) The relationship between C P.m and C V.m can also be given by the relationship: CP.m - Cym = T| aT (a) Use the above equation to demonstrate that C P.m - C V.m - R for an ideal gas. (b) Demonstrate the expression C P.m - C V.m for a gas obeying the equation of state: PVm = RT + B(T)P