9. How do pressure and temperature affect the rate of substitution in minerals? pLEASE DONT GIVE SHORTER ANSWER

Q: 13. Show that the maximum packing ratio in the diamond structure is ë/3/16. [Hint: The structure may…

A: NOTE

Q: Like metallic crystals, ceramic crystals can have defects. We want to identify the type of defects…

A: Answer : Before the vacancy is formed, charge on the crystal is zero. Equal number of positive and…

Q: ne atomic radius of gold is ~ 0.140 nm and the radius of copper iS ~0.130 nm. In 14-kar old what…

A: Solution-  (a). Copper is smaller than gold it will substitutes the gold position so it is a…

Q: 1. Show that the atomic packing factor for FCC is 0.74.

A: For FCC lattice  Z = 4  a = 2√2r  To find the packing fraction (PF) Packing fraction is percentage…

Q: A20g_sample of a n0nreactiveMetal is placed in flask c0ntaining 12mL 0f water; the final v0l 0f…

A: Given: mass of sample = 20 g Initial volume of water = 12 mL Final volume of water = 13.67 mL edge…

Q: 3. Estimate the degree of crystallinity of given polymer assuming that the area under red curve is…

A: Given: Area under the red curve = 47% area under the black curve. The degree of crystallinity, α,…

Q: quick question about ceramic materials. why are ceramic samples difficult to mold into different…

A: A mixture of clay, ceramic powders, earthy elements like silica and water are mixed well and are…

Q: Using your knowledge in crystal chemistry, explain why Si-Al-rich minerals are found nearer or at…

A:

Q: 1. The copolymer with a (mer) of periodically arranged atoms is: b) random a) alternating e) block…

A: 1) The copolymer with a mer of periodically arranged atoms is block copolymers.

Q: A non-pure semiconductor has a gap of energy equal to 1ev. The density of the holes for it is equal…

A: The materials with conductivity values lies between conductors and insulators are called…

Q: 3/4 1/2 ty x+

A:

Q: 2. Prove that the atomic packing factor of hexagonal close-packed is 0.74.

A:

Q: QUESTION 4 Calculate the radius of the largest interstitial void in the Fcc y iron lattice. The…

A: Given:  Iron forms FCC lattice. Radius (R) of iron atom = 0.129 nm  At position (1/2,0,0) ;…

Q: Chromium (Cr) has the Body-Centered Cubic (BCC) crystal structure. The edge length is a = 0.288 nm.…

A: The correct answer is option c which is 4.01.

Q: 2. The following table lists diffraction angles for the first three peaks (first-order) of the x-ray…

A: X ray diffraction studies can be correlated with Bragg’s law directly. Bragg’s law can be presented…

Q: You tested a soultion Ca(C2H3O2) for elecdtrical conductivity. What might explain the electrical…

A: Electrical conductivity of a solution is due to the ions present in a solution that help in the…

Q: When you shine light of band gap energy or higher on asemiconductor and promote electrons from the…

A: The conductivity of semiconductor is possible due to the transfer of an electron from the valance…

Q: 2. What is glass-ceramic? Please explain the differences between glass and glass & ceramics ?…

A: Answer - Glass-ceramic - a glass-ceramic is a solid material, partly crystalline and partly glassy,…

Q: Compute percent ionic character of gallium phosphide (GaP) given electronegativity for Ga is 1.6 and…

A:

Q: Discussion 1- What are the solutions used in the process of etching alloys?

A: Chemical etching is a sheet metal machining technique that is used to create complicated components…

Q: explain why diamond is a very hard substance and graphite (e.g. pencil ‘lead’) is very soft.

A: The solution is given below -

Q: Which is/are true of ceramics? Check the right answers a) They are composed of anions and cations.…

A: Ceramic structures are composed of electrically charged ions instead of atoms(as in metals). The…

Q: Question 6 The crystallographic information of a material cannot be related to the: O Interplanar…

A: Crystallography is used to determine the basic structure of a solid, like how the atoms are being…

Q: 5. a. Would you expect Frenkel defects for anions to exist in ionic ceramics in relatively large…

A:

Q: 1. Show that the atomic packing factor for FCC is 0.74. 2. Show that the atomic packing factor for…

A:

Q: 1. Construct a vis-à-vis comparison of different alloyed materials. Cite the advantages,…

A: Materials that are formed by the fusion of 2 or more metals are called alloys. They exhibit wide…

Q: What is the definition of a ceramic?

A:

Q: Ceramics used as abrasives must be hard and tough and be able to withstand high temperatures that…

A: We have given that  Ceramics used as abrasives must be hard and tough and be able to withstand high…

Q: (i) Write the type of magnetism observed when the magnetic moments are oppositely aligned and cancel…

A: (i) Magnetism is due to the movement of electric charge. Antiferromagnetism - It is defined by the…

Q: 3.54 The accompanying figure shows three different crystallographic planes for a unit cell of some…

A:

Q: Ruèstion 4 Which materials are likely to have the property of ductile/brittle transition…

A: Solid materials that show very less or negligible plastic deformation are called brittle materials.…

Q: Unknown material has atomic packing factor 0.149 and atomic radius 0.115 nm. If the theoretical…

A: Given  atomic packing factor= 0.149 Atomic radius = 0.115 NM Theoretical density = 4.94 g/cm3  To…

Q: An element, BCC , shows diffraction peaks at 2theta: 40, 58, 73, 86.8, 100.4 and 114.7:…

A: Introduction: BCC stands for Body Centred Cubic. the atoms in the corner of BCC unit cell do not…

Q: (a) What kind of packing arrangement is seen in the accompanyingphoto? (b) What is the coordination…

A: Coordination number is the number of ions, atoms or molecules that a central atom or ions holds…

Q: Please help me and double and triple check your answers my grade depends on this

A: Observing the given unit cell shows that Mn atoms that is pink spheres occupy the corners of the…

Q: The unit cell of nickel arsenide is shown here. (a) What typeof lattice does this crystal possess?…

A: Part a) From top view and side view it is clear that: i) top two edges are equal in length. but are…

Q: Compare the crystal structure of diamond (C) and zinc blended (ZnS). What are the key similarities…

A: Similarities:  Both diamond and zinc blend have FCC lattice structure. Each carbon atom in diamond…

Q: 11) JJ Techie calcined some ceramic powders at 1600℃ for 12 hrs, when removed from the furnace, JJ…

A: Given:- 11) JJ Techie calcined some ceramic powders at 1600℃ for 12 hrs, when removed from…

Q: Ahypothetical alloy has a face-centered cubic unit cell.Its density is 10,470kg/m3 and its atomic…

A: For FCC unit cell : Number of atoms in a unit cell (Z )= 4 Density, d = 10470 kg/m3 = 10.470 g/cm3…

Q: Low fusion temperature of ceramic is between 850-1100 °C 1100-3500 °c 650-850 °C Less than 850 °C

A: As a result of their high bond strengths, ceramics typically have very high melting temperatures,…

Q: (b) Shown below are two schematic band diagrams for silicon. Answer the following questions: (i) For…

A: A doped semiconductor is the one in which certain impurities are added to increase the conducting…

Q: Which of the following statements incorrect? correct about primitive cell There is only one way of…

A:

Q: 5. Why are most metals polycrystalline in microstructure. How would you get a: a. large grained…

A: Answer - Most crystalline solids are composed of a collection of many small crystals or grains of…

Q: The bonds that hold semiconductor atoms together in a crystal are called trivalent bonds. Select…

A:

Q: Why don’t metals cleave in the waydepicted here for ionic substances?

A: A metal is a substance that contains same substance throughout and connected by metallic bond. Metal…

Q: How do pressure and temperature affect the rate of substitution in minerals?

A: The size of the ions and the size of the crystallographic sites they replace. In general, ions of…

Crystallography

Crystallography is the category of science that focuses on the atomic and molecular arrangements with their bonding constituting the crystal structure. It is derived experimentally and originated in the year 1912. It is a combination of two words; those are crystal, meaning a cold drop, and graph, meaning writing.