Please correct answer and don't use hand rating 1. A 50wt% Pb-50wt% Mg alloy is slowly cooled from 700°C to 400°C.(a) At what temperature does the first solid phase form?(b)What is the composition of this solid phase?(c) At what temperature does the liquid solidify completely?(d)What is the composition of this last remaining liquid phase?Temperature (°C)700600500400300200100-0(Mg)02040Composition (at Pb)10204070 100T60Composition (wt% Pb)Mga Pb12001000400200Mg-Pb100(Pb)Temperature F

Step 1: A) From the attached Mg-Pb phase diagram, we can say that the temperature at which the first…

Answered: 1. A 50wt% Pb-50wt% Mg alloy is slowly…

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter9: Liquids, Solids, And Materials

Section: Chapter Questions

Problem 92QRT

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18)
Use the following atomic masses (in g/mol):Mg = 24.31; O = 16; Ca = 40.08; C = 12.01; Na = 23; H = 1; N = 14.01; S = 32.06; Cl = 35.45; 2.) Limestone consists chiefly of mineral calcite (CaCO3). The carbonate content of 0.5413g of powdered limestone was measured by suspending the powder in water, adding 10mL of 1.392M HCl and heating to dissolve the solid and expel CO2. The excess acid required 39.96mL of 0.1004M NaOH for complete titration to a phenolphthalein end point. Find the % wt of calcite in limestone.
The maximum solid solubility of carbon in ferrite occurs at 0.022 wt% C and 727 ° C, the eutectoid composition is 0.76 wt% C, the maximum solid solubility of carbon in austenite occurs at 2.14 wt% C and 1147 ° C, and the cementite composition is 6.7 wt% C. For 2122 g of a 3.2134 wt% C steel at 726 ° C, what will be the mass of carbon present as part of a compound?(a) 67.9 g(b) 74.2 g(c) 58.7 g(d) 83.5 g
Composition (at% Ni) 20 40 60 80 100 1600 2800 1500 Liquid 1453°C 2600 1400 Solidus line Liquidus line 2400 1300 a +L B 1200 2200 1100 2000 1085°C 1000 20 40 60 80 100 (Cu) Composition (wt% Ni) (Ni) Figure Q3a Phase diagram of the Cu – Ni system. 327°C 300 Liquid 232C 200 41 183°C 18.3 61.9 97.8 •C 31 100 21 14 40 60 100 (PD) Composition (wt% Sn) (Sn) Figure Q3b Phase diagram of the Pb – Sn system. (3) aungeadue Temperature (°F)
Scence Midterm Summ X Material%20Science_Midterm%2 x ewer?url=https://ttu-storage.s3.eu-central-1.amazonaws.com/account 1/attachments/390676/Ma ence Midte 02021.pdf Open with Google Docs 5. Iron has a BCC crystal structure, an atomic radius of 0.124 nm, and an atomic weight of 55.85 g/mol. Compute its theoretical density: 6. Below is a unit cell for a hypothetical metal. (a) To which crystal system does this unit cell belong? 40nm 030 nm 0.30 nm (b) What would this crystal structure be called? 1 1 2 7. Sketch a tetragonal unit cell. and witnin that Page Hocations of the point: DELL
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12 (a) (b) Describe how you can obtain the integrated form of the Clapeyron equation as below. State any assumptions you have to make. Afus H (T-T) P₂≈ P₁+ AfusV T₁ The heat of fusion (Afus H) of Hg at its normal melting point (-38.9 °C) is 2.82 cal.g¹. The densities of Hg(s) and Hg(1) at -38.9 °C and 1 atm are 14.193 and 13.690 g cm Estimate the melting point of Hg at 100 atm using the result in (a). respectively. Ans 234.8K or -38.4°C
Topic: Equilibrium Phase Diagram QUESTION 1 A 50 wt% Pb-50 wt% Mg alloy is slowly cooled from 700C to 400C. (a) At what temperature does the first solid phase form? (b) What is the composition of this solid phase? (c) At what temperature does the liquid solidify? (d) What is the composition of this last remaining liquid phase? Composition (at% Pb) 10 30 40 70 100 700 1200 600 a +L Ma Pb M 1000 500 800 400 Mg Pb 600 300 400 200 a + MgPb 100 MgPb 200 MgPb 20 40 60 100 (Mg) Composition (wt% Pb) (Pb) 1 (5) aungeedue
If mass of BCC Leaad Pb=207 g/ mol, and lattice parameter (a) =3.9211×10-8 cm,calculate the (الكثافه المثاليه ) perfect density of Pb //p^:-1
Si crystalizes into a diamond crystal structure with lattice constant a = 0.543\: nma=0.543nm. Calculate the atomic density in units of cm^{-3}cm−3. Values within 5% error will be considered correct.
B6
The thermal and mechanical processing of materials is an important step in ensuring that they have the appropriate physical properties for their intended application. Suppose a metallic element undergoes a phase transit ion in which its crystal structure changes from cubic close-packed to bodycentredcubic. (a) Does it become more or less dense? (b) By what factor does its density change?

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