VIII. Comparison between an amorphous and crystalline solid. Physical Properties Amorphous Crystalline texture melting point compressibility breakability

Q: Determine the directing effect of the substituent on the ring. O Ortho director Para director O Meta...

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Q: Iron has a density of 7.87 g/cm^3 and crystallizes in a body-centered cubic structure. What is the a...

A: Body centred cubic unit cell have atoms that occurs at the corners as well as in the centre of unit ...

Q: Indicate which atoms in the following compound are chiral centers. H3C. HO H3C CH2 (Provide a list o...

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Q: 4. Show the steps necessary, in order, to make each of the following compounds. Start with benzene, ...

A: Benzene is an aromatic compound and gives electrophilic substitution reaction. 

Q: 10.4. Write the balanced equations for the following nuclear reactions: c) 23U + ¿n→4? d) 32U + -{ß ...

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Q: what is the bronstead lowry classifcation of each

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Q: 1.(b): we assume that they dissociate 100% Complete the ICE table: HNO3(aq) + H2O(l) -> H3O+(aq) + N...

A: Answer: In this question we have to find out the concentration of hydrogen ions in acid solutions to...

Q: d) Assume all of the Ca2* in the water comes from CaCO3. How many moles of CaCO, are in 1 L of water...

A: Answer

Q: O CHEMICAL REACTIONS 3/5 Predicting precipitation Complete the table below by deciding whether a pre...

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Q: Express the concentration of a solution (in %w/w, %v/v, %w/v) containing 5g of NaCl and 50 ml of wat...

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Q: Determine the molar mass of the compound if it is between 250.0 and 350.0 g/mol.

A: Let the acid be CxHyOz. Combustion results in formation if CO2 and H2O. CxHyOz + O2   gives    CO2 +...

Q: Nitrogen (N,) gas and hydrogen (H,) gas react to form ammonia (NH, gas. Suppose you have 13.0 mol of...

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Q: Consider Fe2(SO4)3+ 6H2O + 6NH3 → 2Fe(OH)3 + 3(NH4)2SO4. Calculate the mass of (NH4)2SO4 produced wh...

A: Consider the given balanced equation is as follows; Equation:       Fe2SO43  +  6 H2O  +  6NH3   →  ...

Q: Determine the molar solubility for BaCO: (Ksp = 5.0 × 10-9) in a solution that already contains 1.4 ...

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Q: hich one of the following conjugate acid-base pairs is correct? Acid Base HCO3 NO3 a. b. NO3 HNO3 HC...

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Q: Lime, CaO, can be produced in two steps as shown in the equations below. If the percentage yield of ...

A: The two reactions given are,  

Q: The following will exhibit ionization isomerism, EXCEPT: A. Pt(NH3)2CI2 B. Pt(NH3),CI,Br2 C. Pt(en)>...

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Q: thermometer. A 59.8 g sample of quartz is put into a calorimeter (see sketch at right) that contains...

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Q: Which species is the conjugate base in the following reaction? CH3COOH(aq) → H+(aq) + CH3COO−(aq) ...

A: conjugate base means when acid loss its hydrogen and formed the corresponding ion.  here CH3COO- (aq...

Q: Which of the following salts give acidic aqueous solutions? (1) KNO3 (2) KCH3COO (3) NH4NO3 (4) RbI(...

A: Strong acid + strong base = neutral Strong acid + weak base = acidic solution Weak acid + strong bas...

Q: Arrange in increasing bond strength Ba+2, N+2, Hg+2, Cl-2

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Q: Use HSAB theory to determine the direction of the ff. reaction a. Au2O3 + 3S−2 ⇌ Au2S3 + 3O−2 b. MgF...

A: According to HSAB theory, hard acids prefer binding to the hard bases , whereas the soft acids prefe...

Q: Figure 3 Ar L n_o_ D PE I_N Forces *involves nonpolar molecules only Question: 1. What can you obser...

A: The element given is Argon.  Atomic number of Argon = 18  Number of electrons = 18 

Q: Consider the following balanced reaction: Al203 + 3H20 → 2AI(OH)3 If 2.44 x 1020 Al203 formula units...

A: The number of molecules can be determined by the number f moles of the compound produced in the reac...

Q: Answer the following with complete solution: How many grams of sodium formate, NaCHO 2 , would have...

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Q: Only bases undergo hydrolysis reactions. Group of answer choices True False

A: The statement given is "Only bases undergo hydrolysis reactions.".  

Q: CH3 b) CH3 HO Br Br OH c) H3C NH H3C d) CH3

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Q: If 0.0916 g P4O, is mixed with 0.113 g H2O, what is the theoretical yield? P406+6H2Ó → 4H3 PO3 O 0.1...

A: Limiting reagent is the reactant that is completely consumed in the chemical reaction.  Theoretical ...

Q: Palladium crystallizes in a face-centered cubic unit cell. Its density is 12.0 g/cm3 at 27°C. What i...

A: First calculate edge length and then radius of palladium.

Q: Use the van der Waals equation to calculate the volume, in L, occupied by a 1.00 mol sample of chlor...

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Q: Draw the following compounds. (please prtovide a clear picture) C-2 epimer of Talose

A:  Talose is an aldohexose sugar  and D - galactose  is the C-2 epimer of Talose

Q: 1. The carbon from the heartwood of a giant sequoia tree gives 11 counts per minute per gram carbon ...

A: The Initially or fresh is 15counts per min per g and at time t , it's 11counts per min per . With t...

Q: Q3) A: Give the crystal structure for the following metals. Fe , Ni , Pb , Cr , Al , Ag , Zn , Mo , ...

A: Crystal structure is defined as the ordered arrangement of either atoms, or molecules or ions.

Q: 2. The diagram below shows three different forms of water. Mention the bonds present in each of them...

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Q: 3. A 100 mL sample of hard water is titrated with 22.4 mL of the EDTA solution from problem 2. The s...

A: Given information :-  additional info: 1)25.95 mL of EDTA are needed to titrate the Ca2+ ion in the ...

Q: Give a clear handwritten answer of this structure give below..which functional group available in th...

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Q: A solution contains 0.106 M sodium cyanide and 0.344 M hydrocyanic acid. The pH of this solution is ...

A: A question based on equilibrium concept that is to be accomplished. 

Q: For the following five coordination complexes identify the correct oxidation state of the metal.   ...

A: For the following given coordination complexes determine the correct oxidation state of the metal---...

Q: III. Identify the type of intermolecular force of attraction described in each of the following numb...

A: The attraction forces between the different molecules are known as intermolecular forces. Different ...

Q: Which row of the ICF table is defined by the balancedequation’s coefficients?

A: NOTE: It will be ICE i.e. initial-change-equilibrium table and not ICF.  

Q: Amination of guanine leads to 2,6-diaminopurine (DAP; shown below), which is known to cause a point ...

A: The amination of guanine resulting in 2,6-diaminopurine, involves the mutation of guanine into adeni...

Q: Find K for the reaction NH4+ ⇌ NH3(aq) + H+             Given,  H2O ⇌ OH- + H+     Kw = 1.0 ×10-14 ...

A: Equilibrium constant is the ratio of concentration or partial pressure of products amd reactants.  F...

Q: What is the pH of 0.15M of NaOBr solution? Include ionization (dissociation) reactions that will res...

A: Here we have to determine the pH of aqueous solution of 0.15 M NaOBr . Data - Ka HOBr= 2 .24×10-9

Q: 1. Determine the number of chiral centers in each molecule below. Label each with an asterisk. HO b....

A: Since you have posted two different questions as per guidelines we can answer only one per session ....

Q: If 3.25 liters of ammonia react with an excess of oxygen at 500. °C and 5.00 atm pressure, what volu...

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Q: If 58 moles of NH 3 are combined with 32 moles of sulfuric acid, what is the limiting reactant and h...

A: To Solve this problem we have to use the given balanced Chemical equation . 

Q: Consider the titration of 100.0 mL of 0.250 M aniline, C6H5NH2, (Kb = 3.8 x 10-10) with %3D 0.500 M ...

A: Given: Concentration of C6H5NH2 = 0.250 M Volume of C6H5NH2 solution  = 100.0 mL. And concentration ...

Q: 3 Cu   +   8HNO3   g 3 Cu(NO3)2    +  2 NO   +  4  H2O In the above equation how many moles of NO c...

A:  number of moles of NO can be made when 40 moles of HNO3 are consumed is given below

Q: A 70.0 gram metal bar is heated to 256 celsius then submerged into a well insulated calorimeter whic...

A: Given mass of metal bar Mb = 70g  Mass of water Mw = 50g  Complete solution is given below in next s...

Q: Part A Unlike strong acids and bases that ionize completely in solution, weak acids or bases partial...

A: Since we know that ,  pH = -log10[H+]  And pH +pOH = 14 at 25° C

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.