The phase diagram below is that of Au-Ag system.11001065°C1050100960°CL+a9509005060708090100102030Au (%)8. Questions1. What maximum temperature is 90% gold alloy remains to be pure solid?2 Calculate the molar (atomic) percentage of this alloy if 25% of its mass (welght) is silver at 1000°C.3. At 960°C how much mass of silver must be added to gold, with a mass of 156 grams, to attain 35%gold?4. Does this system display peritectic transformation? Why?

(1) For 90% gold alloy to remain as pure solid the maximum temperature will be 1050°C as shown below…

Answered: The phase diagram below is that of…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

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1- The shape of phase diagram draw by lever rule is * Liquidus-A'bB' B' Liquid |r L+S Solidus - A'dB Solid U' 90 100 В 10 20 30 40 50 60 70 s0 A (o) Composition O True O False Temperature
The following question refer to the phase diagram shown here. Composition (at% Sn) 60 T Temperature (°C) 300 200 OC 0 100 327°C O 98 wt% Sn O 100 % O 61.9 wt% Sn 0 0% O 73 wt% Sn 20 T O 50% O 90 wt% Sn 18.3 40 T 20 183°C a + ß 40 T Liquid 61.9 80 B+L 80 232°C 97.8 100 →600 0 100 60 Composition (wt% Sn) (Pb) (Sn) Adapted from Binary Alloy Phase Diagrams, 2nd edition, Vol. 3, T. B. Massalski (Editor-in-Chief), 1990. Reprinted by permission of ASM International, Materials Park, OH. In the Pb-Sn phase diagram, what is the approximate composition of the 3 phase for an alloy with 90 wt% Sn and at 200°C? 500 400 B 300 a 200 Temperature (°F) 100
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. One mole of a monatomic ideal gas is held at the start at a pressure of 11 atm and 1 L. The gas undergoes isothermal expansion to 4 L followed by adiabatic expansion to 6 L. The gas is then isothermally compressed to 1.70 atm and adiabatically compressed back to 1 L. STATE P (atm) v (L) т (к) 1 11 1 134 2 2.75 4 134 3 1.4 102.4 4 1.7 4.94 102.4 b. Complete the table below and show your work. Process Q (kJ) W (kJ) Δυ (kJ) дн (k) AS (J/K) 10 2 2 0 3 3 0 4 4 0 1
1- The shape of phase diagram draw by lever rule is * Liquidus-A'bB' Liquid L+S Solidus-A'dB' Solid 10 20 30 40 50 60 70 80 90 100 A (°o) В Composition True False Temperature
1. Calculate Z and V for ethylene at 25°C and 12 bar by the following equations: a. The truncated virial equation with the following experimental values of virial coefficients: B=-140 cm ³ · mol -1,C=7200 cm 6. • mol -2 В Z = 1+-+ V2 V ВР b. The truncated virial equation, Z = 1 + with a value of B from the generalized Pitzer RT correlation for the second virial coefficient. c. The Redlich/Kwong equation d. The Soave/Redlich/Kwong equation e. The Peng/Robinson equation
T (°C) Р (кра) u (kJ/kg) Phase description 20 5000 |150 631.68 225 2000 30 Saturated liquid 300 2600
Material T, oC P, kPa v, m3/kg x Phase description Water 60 0.25 Water 180 100 R-134a 24 0.004 Fill out this table by using thermodynamic tables and show all details, calcuations and tables used to find the missing values.
7. Determine the missing properties and the phase descriptions in the following table for water. You may need help from the properties table. T, °C Р, КРа u, kJ/kg Phase X description A 175 0.6 В 110 1600 C 1500 2950 90 500 E 800 0.0
A particle of mass m constrained to move on the surface of a cylinder defined by x² + y° = R? . The particle is subject to a force directed toward the origin and proportional to the distance of the particle from the origin: F= -kr. (a) Use the Hamiltonian method to find the equations of motion. (b) Draw the phase diagram for the particle. 4. dA
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Use the phase diagram for water to answer the following: 1. At what temperature and pressure does the triple point of water occur? 2. Find the critical pressure of water 3. Find the critical temperature of water

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The phase diagram below is that of Au-Ag system. 1100 1065°C 1050 000 960°C L+a 950 900 10 20 30 40 50 60 70 80 90 100 Au (%) L.