Suppose you shade a square of side 1.0 cm with a pencil that leaves a layer of graphite 315 nm thick. Estimate (a) the number of carbon atoms that you deposited and (b) the amount in moles.

Q: calculate the ionic attractive energy between K and O ions per mol of the material.

A: Between  K+ and O2-  ionic bond is formed. Ionic bonds are formed when positively and negatively…

Q: Draw and explain pressure-density phase diagram for CO2.

A: Phases diagram gives the graphical representation of the physical states of a substance under…

Q: Determine the phase changes carbon dioxide undergoes when its temperature is varied, thus holding…

A: Conversion of kPa to atm:

Q: Estimate the thermal diffusivity of butter at 20 degrees Celsius

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Q: Vapor Pressure (kPa) at 20°C 2.33 5.85 58.96 LIQUID Y 4. Which liquid has the strongest…

A:

Q: The physical characteristics of a polymer depend not only on its molecular weight and shape, but…

A: Polymer is a material that consists of a large number of repeating units called monomers. We know…

Q: Does titanium expand or contract as it transforms from hcp to bcc? The atomic radius of titanium is…

A: In unit cell atoms are present at corner, faces and edges depending upon the type of unit cell. In…

Q: A sample of an alkali metal that has a B.C.C unit cell is f0und t0 have a mass of 1.000 g and a…

A: Alkali metals react with water to produce hydrogen according to the equation M + H2O ------> MOH…

Q: Beryllium has an HCP unit cell for which the ratio of the lattice parameters c/a is 1.568. If the…

A: The HCP unit cell or hexagonal closest packed consists of 6 atoms in one unit cell and its…

Q: If the density of europium is 5.25 g/cm3 at 20 degrees celsius, what is the mass (in grams)of one…

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Q: At 25 ℃, how high will water rise in a glass capillary tube with an inner diameter of 0.63 mm?

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Q: which variables must be controlled and in what manner to produce diamond from graphite?

A: Graphite and diamond are completely made up of carbon, in-fact are referred as allotropes of carbon…

Q: he NaCl crystal structure consists of alternating Na⁺ and Cl⁻ ions lying next to each other in…

A: Atomic radius: Distance between nucleus and last shell electron of an atom is an atomic radius. It…

Q: Show that your calculation of number of atoms in a unit cell (⅛, ¼, ½, 1 added together support the…

A: NaCl shows a FCC type  Structure In FCC  Na is of small size so na occupy the  octahedral  voids…

Q: Increasing the temperature will affect the conversion of graphite to diamond form? Express it in…

A: Carbon and its allotropes: The element with atomic number 6, symbol 'C' and belonging to group 14 is…

Q: What is difference between the structure of diamond and graphite?

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Q: Describe in a few sentences the effect of temperature on a typical ferromagnetic material. Provide a…

A: The French physicist Pierre Curie who in 1895 discovered the laws that relate some magnetic…

Q: How many molecular orbitals are present in the conduction band of a lithium crystal with a mass of…

A: Any conduction band is formed by the overlap of two molecular orbitals. Hence, the number of…

Q: In NaCl, the cations are more mobile than the anions. What effect, if any, do you expect small…

A: Hello. Since your question has multiple sub-parts, we will solve the first three sub-parts for you.…

Q: (a) Describe the arrangement of molecules in solid, liquid, and gas.

A: According to Q&A guidelines of Bartleby, we are supposed to answer only the first question out…

Q: A plasma-screen TV contains thousands of tiny cells filledwith a mixture of Xe, Ne, and He gases…

A: The given parameters are, Dimensions of cell : 0.900 mm× 0.300 mm × 10.0 mm Total pressure: 500…

Q: Calculate the volume of the hexagonal unit cell of sodium nitrate, for which dimensions are a=1692.9…

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Q: What is the molar enthalpy of vaporization of CCI3F when it boils at 23.7°C given that ASvap %3D…

A:

Q: Express the relationship between atomic radius (r) and the edge length (a) in the bcc unit cell.

A: Note that for a BCC unit cell, there will be one atom divided equally at all the 8 corners of the…

Q: Cesium chloride has a body-centered cubic structure with unit cell 0.4123 nm. What is the potential…

A: Potential energy can be calculated using the following formula.

Q: B A T On the phase diagram shown above, segment substance are in equilibrium. corresponds to the…

A: The phase-diagram is :

Q: Given that the density of KBr is 2.75 g/cm3 and that the length of an edge of the unit cell is 659…

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Q: Is arsenic-doped germanium a p-type or n-type semiconductor?

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Q: Write the difference between ferromagnetism and anti-ferromagnetism.

A: In magnetic substances, when the metal ions are grouped together into small region, they form…

Q: Describe the physical origins of linewidths in the absorption and emission spectra of gases. liqu…

A: Spectral line arises from the emission or absorption of light. It is used to identify atoms or…

Q: Calculate the interplanar spacing (in picometers) that corresponds to defracted beams of X-rays at θ…

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Q: What is the formula of a compound in which the element Y forms ccp lattice and atoms of X occupy…

A: The unit cell is the smallest repeating unit which gives the formation of the crystal lattice. There…

Q: The inorganic part of bone is made of CaF2, or fluorite. For CaF2, the unit cell is cubic, and the…

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Q: what are antiferromagnetic and ferromagnetic solids?

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Q: How many molecular orbitals are present in the valence band of a sodium crystal with a mass of 5.45…

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Q: What are the various phases of SiO2?

A: The objective of the question is to write the various phases of SiO2.

Q: Estimate the density of calcium oxide (rock salt structure), knowing that the ion rays are 100 pm…

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Q: What is the probability of a lattice site to be empty for adamantine at 250 degrees C? Delta H for…

A:

Q: Find the planer density (Po) in (atom/mm) of (100) in a face centered cubic unit cell with lattice…

A: In the given question we have to calculate the planar density and Atomic radius. Given data:  plane…

Q: Calculate the height in meters of a column of liquid glycerol (d = 1.26 g/cm3) required to exert the…

A: Pressure will remain same then we can write dHg×g×hHg = dalc×g×halc Where dHg = density of mercury g…

Q: Define sarface temsion. Give a concise explana- tion of the origin of surface tension in terms of…

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Crystal Lattices and Unit Cell

Consider a crystal. The regular and repeating pattern of constituent particles is the most distinguishing feature of crystalline solids. A crystal lattice is formed when these particles are replaced with representative points. The three-dimensional arrangement of constituent particles is known as a crystal lattice. Unit cell is that the smallest portion of a space lattice which when repeated in several directions, generate the whole lattice. Unit cell is a building block of a lattice. It is the smallest unit of cell.