1. Water has higher critical values than that for helium molecules. 2. Liquefaction of gases is only occurred when we have low temperature and high pressure as external effects. 3. Amorphous solids characterized by lower water solubility than anhydrous crystalline solids. 4. Melting point for even number alkanes is more than that for odd number. 5. Mesophase is the same as the supercritical liquid. 6. The ternary systems can be represented by both planar and triangular diagrams.

1. Water has higher critical values than that for helium molecules. 2. Liquefaction of gases is only occurred when we have low temperature and high pressure as external effects. 3. Amorphous solids characterized by lower water solubility than anhydrous crystalline solids. 4. Melting point for even number alkanes is more than that for odd number. 5. Mesophase is the same as the supercritical liquid. 6. The ternary systems can be represented by both planar and triangular diagrams.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

What is the solubility of naphthalene at 50 C in an ideal solution? The melting point of naphthalene is 90 C and the molar heat of fusion is 3500 cal/mole. the gas constant = 1.987 cal mol'degree %3D Select one: O a. 0.55 Ob.93.3 Oc.0.27 Od.6.7
Shown to the right is the solid-liquid phase behavior for mixtures of component A and component B at 1 atm. Use the phase diagram to answer the following questions. a) Specify the melting point of substance B at 1 atm b) What is the maximum composition (mole fraction) of component B that is possible for the mixture to exist in phase S2? At what temperature does this occur? c) 20mol of component A and 180mol of component B are mixed at 350°C and 1 atm. The mixture is cooled at constant pressure to 200°C. i) What phases are present at the final state? ii) What is the composition of each phase at the final state? iii) What is the number of moles of each phase at the final state?
1. Visualize a substance with the following points on the phase diagram: a triplepoint at 0.05 atm and 150 K; a normal melting point at 175 K; a normal boiling pointat 350 K; and a critical point at 2.0 atm and 450 K. The solid liquid line is “normal”(meaning positive sloping). For this, complete the following:a. Roughly sketch the phase diagram, using units of atmosphere and Kelvin. Labelthe area 1, 2, and 3, and points T and C on the diagram.b. Describe what one would see at pressures and temperatures above 2.0 atmand 450 K.c. Describe the phase changes from 50 K to 250 K at 1.5 atm.d. What exists in a system that is at 1 atm and 350 K?e. What exists in a system that is at 1 atm and 175 K?2. Based from the phase diagrams of water and carbon dioxide, answer thefollowing questions and justify your answers: 1. You have ice at 263 K (-10.0 oC)and 1.0 atm. What could you do to make the ice sublime? 2. A sample of dry ice(solid CO2) is cooled to 173 K (-100.0 oC), and is set on a table at…
Consider the following properties of a certain pure substance: Normal (P = 1 atm) boiling point: 280K Normal melting point: 190 K Triple point: 170 K, 0.800 atm Which among the statements below is INCORRECT? Select one: At 0.5 atm and 280 K, the substance is a gas. O b. At 1.5 atm and 250 K, the substance is a liquid. O c. At 0.80 atm and 250 K, the substance is a solid. O d. At 1.50 atm and 165 K, the substance is solid.
V, Vapor - 90 bpB 90 80 + 80 70 - i+ 70 60 tv, Liquid 60 3D 50 %3D 50 3D 100% A 0% 80 20 60 40 40 60 20 0% 80 100% B d. If we purify all the way to L5, what will be its boiling point and composition then? Temperature
topic: relative equilibrium of liquids Answer the following, show complete solutions. Please Write legibly. ty
For two hypotetical materials which have limitless solubility for both in the “liquid” and “solid” states in each other, the following data are listed. Melting Temperatures of material A and B are Tm,A and Tm,B respectively, Liquidus and Solidus curves are circular arcs. a- Draw the related “Phase Diagram” of Material A and Material B showing the data given and calculated. b- Calculate/Determine the compositions of phases at T2 , explain the procedure. c- Calculate/Determine the “percentages” of “phases” of Alloy,2 at T2 , explain the procedure. Given: -Tm,A, Celcius =300 -Tm,B, Celcius =800 -T1, Celcius =600 -B percentage of Liquid phase at T1 =25 -B percentage of Solid phase at T1 =70 -B percentage of Alloy 2. =50 -T2, Celcius =650 -B percentage of Liquid phase of Alloy 2 at T2 = to be calculated -B percentage of Solid phase of Alloy 2 at T2 = to be calculated
Refer to the following phase diagram (not to scale!) for nitrogen : 33.5 1.00 atm 0.127 63.1 63.2 77.4 126.0 T Kolvin At a pressure of 1 atm, the temperature 63.2 K is called the The normal boiling point for Ng is at The triple point pressure for Nz is ]of N2 - K atm The critical pressure for Ng is 33.5 atm. At temperatures above 126 K and pressures above 33.5 atm, Ny is a Nz is a[ Nz is a N2 is a |at 26.4 atm and 57.5 K. |at 1.00 atm and 75.1 K. at 0.127 atm and 83.0 K.
Q3/ Draw thermal equilibrium diagram for the binary alloy (Pb- Sn) from the following data :- Lead melting at 327 °C, Tin melting at 232 °C, and the eutectic mixture consists of (61.9 wt% Sn- 38.1% Pb) at 183 °C. The maximum solubility of Sn in Pb 19.5 wt% at 183 °C, but the maximum solubility of Pb in Sn 2.6 wt% at 183 °C, and the solubility limits to each other's decreasing to zero at room temperature. (Assume solubility lines linear). Determine the following :- a- Identify all phases are present in the diagram. b- Calculate the amount of each phase for the alloy which consist of (60wt% pb -40wt% Sn) at 400 °C 200 °C ,and 100°C sn c- Calculate the percentage of eutectic for the alloy which consist of (60wt% Pb- 40wt% Sn) at 150°C 1
An alloy system consists of two metals A&B which are soluble in each other in all proportions in the liquid state, but completely insoluble in the solid state. The melting point of metal A is 425°C and B is 375°C. The lowest melting point (Eutectic) is 230°C at 40%B. Choose the correct answers for the following sentences: the phases present in the equilibrium diagram are: OL& A & B O A & B O A&L B& L
Petroleum is purified by a process called fractional distillation. Select one: True False
Your team has invented a compound for use in refrigeration processes, R−X. You have asked your technician to characterize the pure component vapor-liquid equilibrium of the fluid at 300 K, and he has faxed you the results below. Unfortunately, the quality of the fax is low so that you are unable to distinguish if the properties correspond to those of the liquid or vapor phase. Using only the provided data, determine which properties correspond to the liquid and vapor phase. Also be sure to explain how you came up with your answer. T = 300 K P = 7.0282 bar V = 0.83357cm3/g V = 29.246cm3/g U = 392.71 kJ/kg U = 236.60 kJ/kg