Magnesium metal is very close to being a hexagonal close-packed array of atoms. X-ray studies show that the Mg-Mg distance is 3.203 Å. Calculate a value for the density for metallic magnesium. The molar mass of Mg is 24.305 g mol-1

Q: The rate constant for a particular gas-phase reaction is k = 6.8*10-42 cc2 molecules-2 s-1 when the…

A: Answer: In this question we have convert the cc2molecule-2s-1 in L2mol-2s-1. So basically this is…

Q: 8. A buffer consists of a mixture of a weak acid and its conjugate base but the pH 4.00 buffer…

A: above molecule contain both acid as well as salt . so it can act as buffer. if we add hCl to the…

Q: Calculate AS° for the following reactions, using standard entropy values from the table below. a.…

A: Given :-  NH4Cl(s) → NH3(g) + HCl(g)  Species         S° J/(mol-K)  NH4Cl(s)         94.86 NH3(g)…

Q: 3. Calculate cell voltages under the following conditions at 25°C: a) Zn Zn (0.50 M)l Cu" (0.10…

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Q: A solution of hydrochloric acid is mixed with an equal volume solution of barium hydroxide. When pH…

A: The Concentration of Barium hydroxide solution = 0.25 M

Q: Equation 1. Use the calculation of E° to determine which of the following reaction is spontaneous…

A: ∆G°<0 => spontaneous ∆G°> 0 => non-spontaneous ∆G° = -nFE°cell E°cell = E°cathode…

Q: Calculate the ph of a solution that is 0.040 M in HI.

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Q: Which is the best nucleophile for an SN2? A B Me Me Li Ме 'Li Li В O A

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Q: A standard galvanic cell is constructed with Ni2+ | Ni and Zn2+ | Zn half cell compartments…

A: A galvanic cell is constructed by two half cells which is Ni2+|Ni and Zn2+|Zn. Higher the value of…

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Q: The table shows the pH value and the corresponding color change for a chemical indicator bromothymol…

A: Provided range of color changes of bromothymol blue: The provided substances have to be sorted in…

Q: Solid CO2 (0.44 mol) is reacted with CH3MGB (0.28 mol) in ether solvent. The product of the reaction…

A: Grignard reagent react with CO2 and H+ and formed Acid.

Q: . Calculate cell voltages under the following conditions at 25°C: a) Zn zn" (0.50 M)lcư* (0.10 M) Cu…

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Q: 3. Consider the reaction: N2(g) + 3 H2(g) → 2 NH3(g) In an experiment it was found that the initial…

A: Solution -

Q: The primary standard must satisfy one of the following criteria a) Available in pure form b)…

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Q: Consider the photochemical isomerization A= B. At 650. nm, the quantum yields for the forward and…

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Q: di ud all resanance Sructures, underline hs best cantributor Original CH2 -CH3 CH3 CH3 more the pi…

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Q: A) Compute A,H®, A,S', and AStotal and determine the spontaneity of this reaction under standard…

A: Enthalpy data , delrtaH0(Kjmole): KMO3= -494.63 Kj/mole, O2=0, KCN= -113.0 Kj/mole, C=0 entropy…

Q: For the reaction P4010(s) + 6 H20(1) 4 H3PO4(aq) AG° = -447.6 kJ and AS° = -16.3 J/K at 345 K and 1…

A: The sponteinity of reaction is decided by the standard Gibb's energy change of the reaction. In the…

Q: A)   Determine the ionic formula of one Cr+6, 4 oxygen atoms (polyatomic ion with a charge of -8)…

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Q: The name given to an aqueous solution of HNO3 is what?

A: Nitric acid (HNO3) is a strong acid because when it is dissolved in an aqueous solution, it…

Q: Strong acids and bases completely dissociate in water. Use the table in the introduction to classify…

A: Answer: On adding in water, only partial ionization of weak acids and weak bases takes place while…

Q: 2. Calculate E°, AG° and K at 25°C for the reaction: 4CIO, (au) - Cl (ag) + 3CIO, (ag)

A: It is an example of disproportionation reaction  Here We are required to find the standard cell…

Q: What is the graphical or expanded formula of Alkane, Alkene and Alkyne if n=4?

A: General formula  of Alkane = CnH2n+2 General formula of Alkene = CnH2n General formula of Alkyne =…

Q: How many grams of Mg3(PO4)2 are in 10.00 mL of a 2.500 M solution ?  The GFW for magnesium phosphate…

A: Given, Strength of the solution: 2.500 M Volume of the solution: 10.00 mL Molar mass of magnesium…

Q: C2H6 O2 -> H2O CO2

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Q: 5/1571092/take/11/ Practice SKETCHPAD A 1.2 M solution of a weak base B is prepared. Using a pH…

A: Concentration = 1.2 M pH = 11.82

Q: Br OCH2 CH3 Br

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Q: 35. A 50.00 mL of 0.0275 M HCl solution was titrated with 0.1500 M NaOH. Calculate the pH of the…

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Q: 4. a. Calculate the theoretical yield of HNO3. Indicate the limiting reactant. O2 + 2 H20 + 4 NO2 4…

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Q: Predict i ducts of the reaction below. That is, complete the right-hand side of the chemical…

A: Balanced Chemical Reaction : Balanced chemical reaction are those reaction in which the atom on both…

Q: Give the IUPAC names of the following compounds

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Q: The viscosity coefficient of methane at 0 °C is 102.6x10-6 poise. Calculate the molecular diameter.

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Q: Which compound is used as masking agent in Volhard method? Oa Eriochrome black-T O Nitro benzene. Oc…

A: In volhard method Ag+ ion of AgCl is need be masked ,otherwise it will react with thiocyanate to…

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Q: 1. The following data were obtained in an experiment in the reaction: A → products. Experiment 1 [A]…

A: Let us solve the question for 1st order reaction.

Q: Consider the reaction: I2(g) + Cl2(g) 2ICI(g) Using standard thermodynamic data at 298K, calculate…

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Q: The viscosity of methane at 20 °C and 1 atm pressure is 1.09x10-4 poise. Calculate the mean path in…

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Q: What is true about the IR spectrum of 2,3-dimethyl-2-butene?

A: The details about IR spectrum of  2,3-dimethyl-2-butene is given below

Q: In the analysis of 0.8972 g of an impure Cl- sample (35.45 g/mol), 1.399 g of AgCl (143.32 g/mol)…

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Q: HCIO, Mg(OH)2 HBr HNO, CHA NaCl HF Ba(OH)2 LIOH KOH Arhenius acid Arhenius base Neither

A: Arrhenius acid are acid which give H+ when dissolved in water. Whereas Arrhenius base are base which…

Q: Br OCH2 CH3 Br

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Q: Why do alkanes, alkenes, and alkynes have a relatively low boiling point? O They have no large…

A: Boiling point: The temperature at which the vapor pressure of a liquid becomes equal to the…

Q: 1. Use the calculation of E° to determine which of the following reaction is spontaneous under…

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Q: Why is it important to collect the distillate into a test-tube that is immersed in an ice-bath? To…

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Q: 3. Calculate cell voltages under the following conditions at 25°C: a) ZnlZn (0.50 M)I Cư" (0.10…

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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.