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At 473 °C the system Pb-Sn exhibits regular solution behavior, and the activity coefficient of Pb...
S: (30 points). The Pb-Sn phase diagram is given below for your Pb-Sn solid couple (say,...
S: (30 points). The Pb-Sn phase diagram is given below for your Pb-Sn solid couple (say, two O'C for t, - I and , 4 mallbas in physical comtacy is diffusion heat treasted at Liguid L α+L α+ β wt% Sn 3.1 Write down the solution of the Fick's second law of diffusion for a semi-infinite bar, where C, is initial solubility of Sn in pure lead (Pb) at t = 0 and C, is the solubility of Sn in...
Composition (at% Sn) 60 0 20 10 80 100 327°C 600 300 Liquid 500 232°C a...
Composition (at% Sn) 60 0 20 10 80 100 327°C 600 300 Liquid 500 232°C a + L 200 183°C B+ 400 B Temperature (°C) Temperature (°F) 18.3 61.9 97.8 300 100 +B 200 100 20 40 60 80 100 (Sn) (Pb) Composition (wt% Sn) 3. A Pb-Sn phase diagram is given. Answer the following questions. There is no need to re-draw the diagram in your solution sheet. (a) What is maximum solubility of Sn in Pb? (1 point) (b)...
answer for each of the following Problem 1 (20 pts): Provide a short but comprehensive forming ences process and mechanical properties (5 pts). b) Solder is a fusible Sn-Pb alloy used to create a...
answer for each of the following Problem 1 (20 pts): Provide a short but comprehensive forming ences process and mechanical properties (5 pts). b) Solder is a fusible Sn-Pb alloy used to create a permanent bond between metal workpieces (eg. to attach an electrical wire to a pin on a printed circulit board). Given the phase diagram of Sn-Pb system, recommend a proper composition for solder with good usability and provide your justification. (5 pts) c) A 10 wt% Sn-90...
Please help. i will rate What is the activity coefficient for each ion at the given ionic strength at 25°C? Activi...
Please help. i will rate
What is the activity coefficient for each ion at the given ionic strength at 25°C? Activity coefficients at various ionic strengths can be found in this table. so - (x = 0.1 M) Y = .476 AP (4 = 0.01 M) y = .348 Dy! (u = 0.05 M) = 0,0941 (CH,CH), NH* (4 m (0.001 M) ¥m (0,9635 Ion Use the Debye-Hückel equation to calculate the activity coefficient of each ion at the given...
4) a) For the system of equations given, partially row reduce the coefficient matrix in the...
4) a) For the system of equations given, partially row reduce the coefficient matrix in the following careful way: *1 + 2y, - 2 = 5 4x1 +9y1 - 32 = 8 (5x + 12y - 321 = 1 Stage 1: just reduce the matrix first to an upper triangular form U and leave pivot entries as they are (don't multiple to change them to 1's). Reduce from left to right through the columns and from the pivot entry down...
4) a) For the system of equations given, partially row reduce the coefficient matrix in the...
4) a) For the system of equations given, partially row reduce the coefficient matrix in the following careful way: X1 + 2yı - 2 = 5 4x+9y, - 32 = 8 (5x + 12yı - 324 = 1 Stage 1: just reduce the matrix first to an upper triangular form U and leave pivot entries as they are (don't multiple to change them to 1's). Reduce from left to right through the columns and from the pivot entry down within...
21.6 A,B,C,D result given in part c of this exercise. 21.6. Consider a damped mass/spring system...
21.6 A,B,C,D
result given in part c of this exercise. 21.6. Consider a damped mass/spring system given by m dy gdy tr dt + ky = Fo cos(nt) where m. y. K and Fo are all positive constants. (This is the same as equation (214) a. Using the method of educated guess, derive the particular solution given by equation ser (21.10) on page 409. genelaidi b. Then show that the solution in the previous part can be rewritten as described...
need help a) For the system of equations given, partially row reduce the coefficient matrix in...
need help
a) For the system of equations given, partially row reduce the coefficient matrix in the following careful way: *1 + 2yı - 24 = 5 4x1 +9yı - 321 = 8 (5x, +12yı - 324 = 1 Stage 1: just reduce the matrix first to an upper triangular form U and leave pivot entries as they are (don't multiple to change them to l's). Reduce from left to right through the columns and from the pivot entry down...
Write a program in C++ to find the solution to a polynomial, given the coefficients A,...
Write a program in C++ to find the solution to a polynomial, given the coefficients A, B, C in the equation below. Ax^2 + Bx + C = 0 Use the quadratic equation, there should be 2 solutions. The solutions should have 2 decimal places Sample output is given below. Enter coefficient A: 1 Enter coefficient B: -1 Enter coefficient C: -6 The two solutions to this equation are 3.00 and -2.00
At 25° C the thermodynamic activity product (Kw) for the autopyrolysis of water 21,0 H,0+1 +...
At 25° C the thermodynamic activity product (Kw) for the autopyrolysis of water 21,0 H,0+1 + OH-1 may be formulated as Ku= [H3O+][OH-] = 1.008x10-14 where [H3O+1] and [OH-] represent the activities of hydronium ion and hydroxide ion, respectively, and where the activity of water is taken to be unity. a) Using the Davies equation, the equilibrium expression and the definition of pH, show that pH = 6.998-(0.512 -0.2u 1+ Ju pH = 6.998–(0.512 -0.24 Davies equation -log7: = 0.51227...
S: (30 points). The Pb-Sn phase diagram is given below for your Pb-Sn solid couple (say, two O'C for t, - I and , 4 mallbas in physical comtacy is diffusion heat treasted at Liguid L α+L α+ β wt% Sn 3.1 Write down the solution of the Fick's second law of diffusion for a semi-infinite bar, where C, is initial solubility of Sn in pure lead (Pb) at t = 0 and C, is the solubility of Sn in...
Composition (at% Sn) 60 0 20 10 80 100 327°C 600 300 Liquid 500 232°C a + L 200 183°C B+ 400 B Temperature (°C) Temperature (°F) 18.3 61.9 97.8 300 100 +B 200 100 20 40 60 80 100 (Sn) (Pb) Composition (wt% Sn) 3. A Pb-Sn phase diagram is given. Answer the following questions. There is no need to re-draw the diagram in your solution sheet. (a) What is maximum solubility of Sn in Pb? (1 point) (b)...
answer for each of the following Problem 1 (20 pts): Provide a short but comprehensive forming ences process and mechanical properties (5 pts). b) Solder is a fusible Sn-Pb alloy used to create a permanent bond between metal workpieces (eg. to attach an electrical wire to a pin on a printed circulit board). Given the phase diagram of Sn-Pb system, recommend a proper composition for solder with good usability and provide your justification. (5 pts) c) A 10 wt% Sn-90...
Please help. i will rate
What is the activity coefficient for each ion at the given ionic strength at 25°C? Activity coefficients at various ionic strengths can be found in this table. so - (x = 0.1 M) Y = .476 AP (4 = 0.01 M) y = .348 Dy! (u = 0.05 M) = 0,0941 (CH,CH), NH* (4 m (0.001 M) ¥m (0,9635 Ion Use the Debye-Hückel equation to calculate the activity coefficient of each ion at the given...
4) a) For the system of equations given, partially row reduce the coefficient matrix in the following careful way: *1 + 2y, - 2 = 5 4x1 +9y1 - 32 = 8 (5x + 12y - 321 = 1 Stage 1: just reduce the matrix first to an upper triangular form U and leave pivot entries as they are (don't multiple to change them to 1's). Reduce from left to right through the columns and from the pivot entry down...
4) a) For the system of equations given, partially row reduce the coefficient matrix in the following careful way: X1 + 2yı - 2 = 5 4x+9y, - 32 = 8 (5x + 12yı - 324 = 1 Stage 1: just reduce the matrix first to an upper triangular form U and leave pivot entries as they are (don't multiple to change them to 1's). Reduce from left to right through the columns and from the pivot entry down within...
21.6 A,B,C,D
result given in part c of this exercise. 21.6. Consider a damped mass/spring system given by m dy gdy tr dt + ky = Fo cos(nt) where m. y. K and Fo are all positive constants. (This is the same as equation (214) a. Using the method of educated guess, derive the particular solution given by equation ser (21.10) on page 409. genelaidi b. Then show that the solution in the previous part can be rewritten as described...
need help
a) For the system of equations given, partially row reduce the coefficient matrix in the following careful way: *1 + 2yı - 24 = 5 4x1 +9yı - 321 = 8 (5x, +12yı - 324 = 1 Stage 1: just reduce the matrix first to an upper triangular form U and leave pivot entries as they are (don't multiple to change them to l's). Reduce from left to right through the columns and from the pivot entry down...
At 25° C the thermodynamic activity product (Kw) for the autopyrolysis of water 21,0 H,0+1 + OH-1 may be formulated as Ku= [H3O+][OH-] = 1.008x10-14 where [H3O+1] and [OH-] represent the activities of hydronium ion and hydroxide ion, respectively, and where the activity of water is taken to be unity. a) Using the Davies equation, the equilibrium expression and the definition of pH, show that pH = 6.998-(0.512 -0.2u 1+ Ju pH = 6.998–(0.512 -0.24 Davies equation -log7: = 0.51227...
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