Sketch the free-energy-versus-embryo/nucleus-radius plot for heterogeneous and homogeneous nucleation and indicate activation free energy and critical radius. (b) Why is heterogeneous nucleation energetically more favorable (i.e., requires less energy) than homogeneous nucleation?

Q: What is the expression for the maximum initial steady- state velocity of the reaction? What is the…

A: The solution of the given question is

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A:

Q: Chemical Reactions and Mechanisms: Use the space below for reactions and mechanisms. Initiation…

A: We have to explain the compounds by using the space below for reactions and mechanisms as…

Q: Consider the following chain mechanism (a) AH →A•+ H• K1 (b) A → B• + C K2 (c) B• + H• → P K3…

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A: Given: The given values are, The concentration of ATPase is E0  = 20 nmol dm-3

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A: the quantum yield of a photochemical reaction is the ratio of no.of moles of light absorbing…

Q: The atomic hydrogen exists in space at an estimated concentration of one particle per cubic meter.…

A: Given that , [H] = 1 particle/m3 Now ,  n = (1particle/m3) x (6.023 x 1023 particles/mol)…

Q: Given the data below, calculate the average rate of Br2 over 50s to 200s. Br, + HCOOH → 2Br¯ + 2H+ +…

A: Given: The concentration of Br2 at 50.0 s is 0.0101 M. The concentration of Br2 at 200.0 s is…

Q: Ethane reacts with chlorine (Cl2) in the presence of ultra-violet (UV) light, to produce…

A: When Ethane reacts with Chlorine gas in presence of ultraviolet light, it gives 1-chloroethane ,…

Q: identify the mechanism

A:

Q: E17F.5(b) The enzyme-catalysed conversion of a substrate at 298 K has K 0.032mol dm and 425x10 mol…

A: Turnover number (kcat) is calculated as follows,

Q: A hypothetical reaction has the two-step mechanism АВ + С + АВС ABC + C + AC+BC The potential-energy…

A: AB + 2 C --> AC + BC

Q: Is a bimolecular reaction necessarily second-order? Is a second-order reaction necessarily…

A: All bimolecular reactions are not second-order reactions, but all second-order reactions are…

Q: (c) A new radioactive element, Fitzgeraldium, is discovered. After 2 days, 80% of a sample of…

A: The radioactive active decay follows first order kinetics. Let the initial number of nuclei be A0…

Q: (a) Most commercial heterogeneous catalysts are extremelyfinely divided solid materials. Why is…

A: a) The size of the particles are important because smaller is the size of the catalyst, more will be…

Q: Ethane reacts with chlorine (Cl2) in the presence of ultra-violet (UV) light, to produce…

A: Ethane with Cl2/hv gives chloroethane via free radical mechanism

Q: when the second intermediate is redrawn from the following perspective, it becomes clear that

A:

Q: The reaction mechanism for renaturation of a double helix from its strands A and B is thought to be…

A:

Q: The turnover number of an enzyme obeying Michealis-Menten kinetics is equal to: O kcat KM O k1/k.1 O…

A:

Q: The following data were obtained for the adsorption of a certain material (ORA) on activated carbon…

A:

Q: What is difference between long range and short range order, briefly discuss with 3 states of matter

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Q: Which term best describes the process shown below? A neutralization B propagation termination D.…

A: The free radical mechanism involves three steps: 1. Chain initiation: This step involves the…

Q: Explain and justify the assumptions that are used to derive the Langmuir isotherm .

A: The Langmuir adsorption model explains adsorption by assuming an adsorbate behaves as an ideal gas…

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A:

Q: What is the mechanism?

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Q: . What is reactant selectivity in zeolite catalysis?

A: What is reactant selectivity in zeolite catalysis?

Q: The adsorption of a gas is described by the Langmuir isotherm with α = 0.548 kPa−1 at 25 °C.…

A: Langmuir theory of adsorption occurs on the solid adsorbent surface, the process is gas onto solid…

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A: The biologically favorable reaction has to be given,

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A:

Q: Discuss the featu res. applications. and limitations of the Michaelis-Menten mechanism of enzyme…

A:

Q: t (dk) Pr(mmHg) 312 390 408 777 488 1195 562 3155 779

A: In the graphical form, if we get a straight line curve between Concentration vs time, it is known as…

Q: Discuss the assumptions made when deriving the Michaelis-Menten model of enzyme kinetics.

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Q: mical kinetics

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Q: The adsorption of a gas is described by the Langmuir isotherm with α = 0.75 kPa−1 at 25 °C.…

A: Given data, Langmuir isotherm constant α = 0.75 kPa-1 Temperature = 25°C. Calculate the pressure at…

Q: Calculate the activation energy of the alternate pathway, assuming the reaction rate increases bay a…

A: logkcku=EU-EC2.303×R×Tthe activation energy for  uncatalyzed reaction =EUthe activation energy for…

Q: what is the approximation used to derive the reaction rate for an enzyme catalysed reaction that…

A:

Q: The ha lf-l ife of pyruvic acid in the presence of an aminotransferaseenzyme (which converts it to…

A: For the first-order reaction, the half-life relates to the rate constant (k) as follows: t12 =…

Q: The Arrhenius parameters for the gas-phase decomposit ion of cyclobutane, C4H8(g)→ 2 C2H4(g). are…

A: Arrhenius equation: Half life: It is the time required to complete the reaction half of its initial…

Q: What term most accurately describes the process below? a. hydrogen abstraction b. halogen…

A: The process of a chemical reaction given is

Q: approximately

A: Explanation-

Q: d. MgBr 1. 2, H,О HO

A:

Q: I The enzyme a-chymotrypsin is secreted in the pancreas of mamma and cleaves peptide bonds made…

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Q: Consider the chemical reaction described by 2A(aq) ⇌ D(aq)with rate constants k1 and k-1.  If the…

A: Consider the chemical reaction described by 2A(aq) ⇌ D(aq) where, rate constants k1 and k2. We have…

Q: Describe the reaction mechanism of the reaction between ethane and chlorine to produce…

A: In presence of Ultraviolet light,  Cl2 acts as radical initiator and and form proppyl radical in…

Q: activation energy (kJ mol-1) for th

A:

Q: Energy of activation = kJ/mol

A:

Photochemistry

Photochemistry is the part of chemistry that studies the various mechanisms of reactions that are triggered by the presence of light energy. It also helps to study the changes involved in a molecule that can undergo the absorption of radiation.