Question 22 Farqtie You are given a small bar of an unknown metal. You find the density ofthe metal to be 11.5 g/cm^3.An X-ray diffraction experiment measures the edge of the face-centered cubic unil cell as 4.06 x 10-10 m. Find the grum-alomic wveight of this melal. Seleet one: a. 130 g/ mol b 126 g niol d. 146 g mo Next page Previcas pape
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- 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.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.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
- ive index ofa liquid is 1.4273 at 20° C, what is its refractive index at 25° C? RI = %3D53. The correct representation of the variation of molar conductivity (y-axis) with surfactant concentra- tion (x-axis) is [CMC = critical micelle concentration]. (a) CMC X CMC (b) CMC X CH CMC KQ1] Calculate ZA and ZAA for argon at 25 °C and a pressure of 1.00 bar using d = 3.84 x 10-1º m obtained from X-ray crystallographic measurements.
- 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: DELLDistinguish between Chemiluminescence and Triboluminescence and give an example of each.大 立 团 %24 E. %# M 个 Bb Course Content - 2021FA-CHM- X OWLV2 | Online teaching and lea X OWLV2 | Online teaching and lea X Choose the substance with th Ô https://prod01-cnow-owl.cengagenow.com/ilrn/takeAssignment/takeCXPCompliantActivity.do?locator=assignment-take CHAPTER 9 - LIQUIDS, SOLIDS, AND MATERIALS O Previous Page 10 of 17E Next O References Use the References to access important values if needed for this question. Copper has a density of 8.92 g/mL. Calculate the radius of a Cu atom expected if copper crystallizes in the face-centered cubic structure. wd 8 O O 663 pm O 320 pm O 104 pm F2 F3 F4 F5 F7 F8 %24 4. %23 6. 6. 2. 5.
- Q4 )A silicon wafer is doped with 10^21 phosphorus atoms / m^3. Find the carrier concentration and fermi level at room temperature ( 300 k ) Nc = 2.8* 10^25 m^-3 and ni = 1.5 * 10^16 m^-3.- & Sketch New · C $ 7 ♡ www 1500 kg/m³ O 3000 kg/m³ 5000 kg/m³ 7000 kg/m³ 9000 kg/m³ 44 < HD E Material X has an atomic radius R = 0.125 nm, an atomic weight of A = 51 g/mol, and a body centered cubic (BCC) crystal structure. Calculate the mass density of this material. Hint: Do your calculations in SI units, as this will help avoid numerical errors from unit conversions. Choose the answer closest to your calculated value.What is the density of atoms/nm^2 on the (110) plane of a zinc blende lattice with lattice spacing 0.489 nm. Three significant digits, fixed point notation.