An element has a face-centered cubic unit cell and an atomic radius of 135.5 pm. Calculate the edge length of the unit cell in units of m  Determine the number of atoms in the unit cell .

Q: Calculate the pH of a 0.424 M aqueous solution of hydrocyanic acid (HCN, Ka = 4.0×10-10).

A: pH of the solution can be calculated by using the formula,  pH = [H+]. Given data, Concentration of ...

Q: In an experiment, 15 mL of 1.0 M NazCO3 was reacted with 5 mL 2.0 M Ca(NO3)2. Calculate the AG of th...

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Q: 5

A: Answer 1 :- Density of silver = 10.5 g/ml Mass of silver ring = 200 centigram = 2 g (As, 1 gram = 10...

Q: Determine the percentage by mass of an element in "salt"

A: Chemical Formula of Table Salt = NaCl Molar Mass of NaCl = 58.44 g/mol Mass of Element Na = 22.99 g/...

Q: A mixture of helium and oxygen gas is expanded from a volume of 42.0 L to a volume of 85.0 L, while ...

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Q: A chemical engineer is studying the following reaction: HCN(aq)+NH3(aq) → CN (aq)+NH"(aq) At the tem...

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Q: 4-ethylcycloheptene * 4,4-dimethylpent-2-ene * 3-chloro-2,7-dimethylnon-4-yne (Cl- Chloro branch) ...

A: In order to write structure of compound.First of all draw structure of main chain then branch with p...

Q: Select True or False: Under the conditions of high temperatures only, the reaction O2(g) → 20(g) wou...

A: According to the second law of thermodynamics, the spontaneous nature of the reaction is determined ...

Q: Which of the following best describes the disaccharide shown here? но. OH но OH OH он HO A. a-1,4' g...

A: Given structure of disaccharide is : Options are :

Q: The pH of an aqueous solution of 3.14×10-2 M ammonium chloride, NH4Cl (aq), is

A: NH4Cl is salt of weak base and strong acid

Q: Compare and Contrast any two microscopy techniques.

A: There are three main types of microscopy: Optical microscopy Single molecule microscopy Stimulated ...

Q: A serving of a certain yogurt contains 6 g of protein, 21 g carbs, and 4 g of fat. How many Calories...

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Q: At –7.73 °C the pressure equilibrium constant K, =6.8 × 10° for a certain reaction. Here are some fa...

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Q: 351 cL to mL

A: This question is related to conversion of units. Unit conversion means gram to kilogram, meter to ce...

Q: Consider these electron transitions in a hydrogen atom: I. n = 2 →n = 1 II. n = 3 →n = 1 III. n= 1 →...

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Q: The ionization constant of methylamine, CH3NH2, (Kb) is 4.2 x 10–4. Write the  dissociation equation...

A: Please find your solution below : Ionic Equilibrium is the equilibrium in which the ionic substance ...

Q: The equilibrium-constant expression for a reaction is Kc = What is K. If the reaction is halved (i.e...

A: What affects the Kc after multiply by half ?

Q: Decide whether each molecule or polyatomic ion is polar or nonpolar. If the molecule or polyatomic i...

A: The covalent bond is formed by the sharing of electrons between the atoms.

Q: he volume of a 0.5333-g sample of gas was measured at 298 K and pressures of 0.059, 0.143, 0.288, 0....

A: Here the mass of 0.5333g of unknown gas at different pressures and volumes at 298 K are given. We ha...

Q: Fill the table with their respective standard entropy of reaction and show the solutions.

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Q: How many grams of ammonium sulfate can be produced if 30.0 mol of H2SO4 react with excess NH3 accord...

A: given reaction, 2NH3(aq) + H2SO4(aq) → (NH4)2SO4 Moles of H2SO4 = 30.0 moles  

Q: Identify: - Element whose 5p orbital has 1 electron - Element in Group 7A whose anion form is isoel...

A: Please find your solution below : Elements in the periodic table are the pure substance that consist...

Q: he pressure when

A: Since you have asked multiple questions, we will solve the first question for you. If you want any s...

Q: 1. Circle the structure that corresponds to the given IR spectrum, mass spectrum, coupled 3C NMR spe...

A: IR provides the information of unknown functional groups of the compound. Mass spectra provides the ...

Q: 50.00 mL of a solution containing both Ni2* and Pb²+ ions requires 46.32 ml of a 0.02041 M EDTA solu...

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Q: 1. Calculate the pH of the following: a. [H*] = 1 x 10³ M %3D b. [OH]=1 x 10$ M C. [H]=1 x 107 M

A: Calculate pH of the given data---

Q: For the reaction: N2(g)+3H2(g)=2NH3(g), a sample contains 4 N2 molecules and 14H2 molecules. When on...

A: Limiting reagent can be defined as the species which get completely consumed in the reaction and dec...

Q: Calculate the standard entropy change for the reaction at 25 °C. Standard molar entropy values can b...

A: Answer: 30.28 J/K

Q: For a particular reaction, AH° = -28.4 kJ and AS = -87.9 J/K. Assuming these values change very litt...

A: Given,  ∆H° = - 24 kJ = - 2400 J  ∆S° = - 87.9 J/K

Q: 1. If the "regular" runs shared between you team's members are strongly dissimilar, why should you a...

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Q: Classify these structures as hemiacetal, acetal, or other. Hemiacetal Acetal Other OH CH3 CH CH:OÇOC...

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Q: Provide arrow pushing mechanism for this reaction.

A: Carboxylic acid reacts with alcohol in the presence of acid or base catalyst to form an ester. The r...

Q: Enter your answer in the provided box. A volume of 36.2 mL of a 0.468 M Ca(NO3), solution is mixed w...

A: Since same compound concentration is added, so we have to calculate the total milimoles of the compo...

Q: Date: Period: Q11: Calculate the AH for the reaction: C2H4 (g) + H2 (g) => C2H6 (g), from the follow...

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Q: 2. Calculate the entropy change at 25°C for the following reaction: 0.5 H2 (g) + 0.5 I2 (s) → HI (g...

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Q: Would the reaction of magnesium, mg with oxygen be more or less vigorous than Al?

A:   Yes the reaction of Magnesium with oxygen will be more vigorously than Reaction of Alminium with o...

Q: Consider the reaction described by the chemical equation shown. 3 C,H,(g) C,H,1) AHxn = -633.1 kJ Us...

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Q: How can Methyl SALICYLATE be tested by chemical means? Include pertinent chemical reactions and stru...

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Q: β-carotene has a molar absorptivity of 100,000 dm^3 mol^-1 cm^-1 a certain wavelength. Calculate the...

A: Please find the below attachments.

Q: b. [OH]=1 x 10$ M

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Q: The correct coefficients for the unbalanced equation below are: PCI 3 + H 2 O ---> H3 PO 3 + HCI О а...

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Q: If 6.63 × 10−6 mol of a compound has a mass of 2.151 mg, what is the molar mass of the compound?

A: Number of moles is calculated by dividing the given mass with molecular mass.

Q: For a certain ideal gas Cp= 8.58 cal/mol-deg. What will be the final volume and temperature when two...

A: Cp= 8.58 cal/molK Number of moles = 2   

Q: Calculate the solubility in g/100 mL of the AgI in 0.10 M NH3 . The NH3 concentration is that of unc...

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Q: 2.SO2 t Oz → 2S03 If 42019 of 80z reacts with 28-6g Df 0z be how produce!? many grams of SDg oil

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Q: Determine the normalized wavefunction for the following function with 0 < x < 2n and k = 40. 4(x) = ...

A: A NORMALIZED HAVE A VALUE 1 UNDER A VOLUME COMPONENT

Q: The So of a pure element at standard state is zero. Select one: O True O False

A: Entropy is degree of disorder in system. More the degree of disorder in the system,more will be entr...

Q: An example of a balanced chemical equation is Water - Hydrogen Gas + Oxygen Gas 2H20 2H2 + 02 1. H,0...

A: 2H2O =  2H + O2 REACTANT GAINS OF ELECTRONS

Q: Consider the following set of quantum numbers: n = 0, 1 = 1, m(I) = 0, and m(s) = +½. This is NOT a ...

A: Quantum numbers describe the arrangements of electrons in orbitals of an atom. There are four quantu...

Q: Solid aluminum (Al)and chlorine (Cl,) gas react to form solid aluminum chloride (AICI,). Suppose you...

A: Given, Solid aluminium (Al) and chlorine (Cl2) gas react to form solid aluminium chloride (AlCl3). m...

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.