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- 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.B- prove that the atomic void ratio of the simple cube (S.C) is 48%?A = 2î + 3} + k B-41+ 2ĵ- k C = 2î - 3ĵ+ 4k c) (AXB) (CX B)
- A sample of silicon is uniformly 8 points doped with (10^16) arsenic atoms per cm-3 and 5x(10^15) boron atoms per cm-3. Using this information and assuming ni is (10^10) cm-3. at 300K determine the following items for this sample: a- The type (n or p).b- The majority carriers concentration.c- The minority carriers concentration. O n-type ; 5*(10^15) cm-3; 10000 cm-3 p-type ; 5*(10^15) cm-3; 10000 cm-3 n-type ; 10000 cm-3; 5*(10^15) cm-3 pure-type ; 10000 cm-3; 5*(10^15) cm-3 O Other:Calafate In, Ic, JE, &, VCE, VOB, VBE and VICE (aff) = 100 given: 10.1 + Vcc = 15 V L RB = 180kh +21 FOX 15 Re = 1KR Re=IKR CE NEDetermine the emf and AG of the cell reaction at 298 K for the given cell. Mg(s) | Mg2+ (0.01M) || Ag*(0.0001M) | Ag(s) 2+ Given: [EM/Mg =-2.37V, + E° =+0.80V] Ag /Ag
- sin@ =h/l Figure 3 heter to fiqure 3 Guen a track length of 90 cm and a neightd differenie of 18čm,whad 18 Sin e.A = 22 + 3} + k B = -41 + 2ĵ- k -4î 2ĵ− C = 2î - 3ĵ+ 4k a) (AXB). CCalculate AG. the equilibrium constant at 350 °C for the reaction between Cl₂ and Br₂ to obtain rxn, BrCl. Use the following data. Cl2(g) + Br2(g) = 2BrCl(g) Cl - Cl Br Br Br - Cl Do/ev 2.51 (¹) 2.00 (¹) 2.27 (¹) r/pm 199 228 217 v/cm-¹ 560 325 444 Use the value of the constant obtained to calculate the concentrations of the species at equilibrium if 2.65 millimoles of Cl₂, 3.1 millimoles of Br2, and 1.44 millimoles of BrCl are introduced into an empty container of 185 cm³, maintaining the temperature at 350 °C