For a 40 wt.% Sn60 wt.% Pb alloy at 150\deg C, (a) what phase(s) is (are) present? (b) What is (are) the composition(s) of the phase(s)? (c) What is (are) the relative amount of the phase(s) in terms of mass fraction?
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- R35 Exercisel. B.1. in en mobe when enthalpy one of goes from book to 5ook under the Pressure, Calculate the change lodine of satm. Ikle give molor heats the of pure Cp (I2, Solid) z 5.4 cal mol" K-1 Cp (Za, liquid) = 19,5 calmol-¹ K-1 bodies! Op 12, gas) = 9.0 Cal mat" K-1 Molar enthalpies of phase change (latent heat): Sh vaporisation, 470K = 6.10 Keatmet-1 shifusion, 387K = 3.74 kcalmol-1 Please answer the question stepwise, showing explanations. Thanks in advanced !!!! detailedQ:: A Si sample is doped with 107 cm3 As. What is the equilibrium hole concentration at 300 k? and where is Ep relative to E,? Take n = 1.5 x 1010 cm-. (Ans. 2.25 x 10'cm,0.407ev).A high-leaded brass that has a composition of 65.5 wt% Cu, 32.0 wt% Zn, and 2.5 wt% Pb with density equal to 8.94 g/cm^3, 7.13 g/cm^3, and 11.^35 g/cm3, respectively. Determine its approximate density Write up to 3 decimal places. Determine the atom percent (%) of lead. Atomic weights: Cu-63.55 g/mol ;Zn-65.41 g/mol ; Pb-207.2 g/mol Write up to 3 decimal places.
- After a pre-deposition diffusion into a water with a background concentration of 1016 /cm3, a following drive-in step at 1100C yields a final junction depth of 2um. Estimate the required time, if the surface concentration after drive-in decreases to 3 X 1017/cm3. Do= 0.32 cm2/s andEA= 3.56 eV.silicon has electron concentration, no = 3x1016 cm3 and n; =1.5 x 1010 cm-3; at T=350 K. (a) Determine Po. (b) Is this material n or p type? (c) Determine E-EF.I need the answer as soon as possible
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