Calcium forms a face-centered cubic crystalline structure with a density of 1.55 g/cm3. What is its atomic radius (in pm)?

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Q: Starting from the Newman projection below, rotate the back carbon to provide the structure in the…

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Q: constant temperature, what would the volun the gas be? O 0.80V O 0.75V 0.60V 0.85V

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Q: How many molecules (not moles) of NH3NH3 are produced from 7.93×10−4 gg of H2H2?

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Q: a Vapor pressure curves for CS₂2 (carbon disulfide) and CH3 NO₂ (nitromethane) are drawn below. What…

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Q: Identify the chirality centers as R or S in the Fischer projection of 4-chlorobutane-1,2,3-triol…

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Q: ESTION 3 *** a) Provide the definition of an allotrope and an example of one. b) When pure iron is…

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Q: Rank the following from 1 = fastest EAS to 4 = slowest EAS.

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Q: Read each description in the first column of the table below. If any chemical element with atomic…

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Q: Complete the equations for the given equilibria, and calculate Keq where the Keq expression includes…

A: Given,  species pKa NH3 35 NH4+ 9.25 species pKa H2O 15.74 H3O+ -1.74

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Q: Then, use a dotted line (or a second color) to draw a second wave that has the same velocity but…

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Q: Gaseous azomethane C2H6N2 decomposes in a first order reaction when heated.  C2H6N2 (g) -> N2 (g) +…

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Q: How many atoms of titanium are there in  0.920 mole of each of the following?   ilmenite, FeTiO3

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Q: If a pharmacist combined 50-mL portions of three syrups having specific gravities of 1.10, 1.25, and…

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Q: 2.The mass of 15.0 mL of a particular liquid was measured to be T1=7.47g,T2=7.45g and T3=7.53g.Find…

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Q: What is the expression for the equilibrium constant? SO₂(g) + ¹/2O₂(g)SO3(g) 0 a) Keg Ob) Keg = Od…

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Q: Find the empirical formula for myristic acid. Express your answer as a chemical formula. Express…

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Q: H3C CH3 H2₂ -(HC-C H₂ -CH2)3- Pristanic acid CH3 IL.

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Q: compound will be more likely to exist as a hydr

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Q: Calculate the volume or weight of the solution. Given: 50ml of 3% sodium hydroxide.

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Q: and 12 2Fe(s) + O2(g) + 2H₂O(1) →2Fe(OH)2 (s) Express your answers in moles to three significant…

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Q: 19. If 500 mL of mineral oil are used to prepare a liter of mineral oil emulsion, how many grams of…

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Q: F. Electron-Dot Formulas and Shape Formula 1. Electron- Dot 2. Number of 3. Electron- Formula…

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Q: a Vapor pressure curves for CS2 (carbon disulfide) and CH3NO₂ (nitromethane) are drawn below. What…

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Q: Ammonia, NH3, can react with oxygen to form nitrogen gas and water. 4 NH3(aq) + 30₂(g) →→→ 2N₂(g) +…

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Q: Consider this reaction: 2N₂O, (g)-2N₂O(g) + O₂(g) At a certain temperature it obeys this rate law.…

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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.