Blue dye can be decolorized by treatment with bleach. The kinetics of the reaction can be studied by testing the absorbance of the solution over time. At the start of an experiment, the blue dye had a concentration of 9.05 × 10–6 M and an absorbance of 0.70 at the observed maximum wavelength. The path length of the cell is 1.00 cm. What is the molar absorptivity of the blue dye?

Q: A research group discovers a new version of happyase, which they call happyase*, that catalyzes the…

A: Given, Vo=220 nM/s= kcat = 555 s-1 [E]T=3.2 nM [S]=55 μM=55000 nM

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: In the photobromination of cinnamic acid, using radiation at 420 nm with an intensity of 1.4 x 10 3…

A: quantum yield = number of moles of reacted / number of Einstein absorbed number of moles of bromine…

Q: 5. The initial rate method is being used to study the kinetics of a particular reaction. The…

A: Reaction rates starts varying with passage of time due to concentration change of reactants species…

Q: Peroxyacyl nitrates contain two relatively weak bonds that can be broken by low-energy photons.  The…

A: Given: Bond energy of N-O bond = 201 KJ/mol = 201000 J/mol.                                 (Since 1…

Q: Consider the decomposition of molecule X, which occurs by this first order reaction: X  =>  Y + Z…

A: Ans

Q: Repeat Problem 24.61, assuming that one of the reactants is in its lowest excited state. Based on…

A:

Q: The enzyme-catalysed conversion of a substrate at 25 °C has a Michaelis constant of 0.032 mol dm−3.…

A: The Michaelis-Menton equation for the rate of conversion of a substrate or basically the rate of…

Q: he fluorescence of a fluorophore is quenched in the presence of iodide ions. (i) Would the…

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: Q 6/ A- Given that the density and atomic weight of iron are 7.65 g/cm and 55.859 g/mol respectively…

A: Formula used :  Nv = N e-{Ea/KT} Where Nv is concentration at vacancy. N = concentration of atomic…

Q: Calculate the activation energy for the cementation of copper by iron, from the copper sulfate…

A: The data given is,

Q: Iodine-131 is used to treat tumors in the thyroid. Its first order half life is 8.1 days. If a…

A: Decay of I-131follow 1st order kinetics λ (decay constant) = 0.693/t1/2 = 0.693 / 8.1 days = 8.56…

Q: an experiment to measure the quantum yield of a photochemical reaction, the absorbing substance was…

A:

Q: Calculate the activation energy for vacancy formatiın in Aluminuim, given that the equibilirium…

A:

Q: The radioisotope ¹⁴C (half life = 5730 years) is used for carbon dating. What is the first order…

A: Rate of reaction- The concentration change of designated species (products or reactants) per unit…

Q: The inhibitory effect for an enzyme-catalyzed reaction is demonstrated by the following mechanism.…

A:

Q: Calculate the required nucleus size for the liquid copper to solidify, using the following…

A:

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

A: Long-range order and short-range order is the type of solids. These are the types of arrangement of…

Q: Plot (x/m) versus P for the Freundlich adsorption isotherm Describe how does Freundlich isotherm…

A: All things are provided in handwritten solution.

Q: The speed of sound is 330 m/s. If fireworks are 1.5 km away, what is the length of the time delay…

A: The speed of sound is 330ms-1, and the distance of firework is 1.5 Km.Speed is measured by dividing…

Q: The luminescent first-order decay of a certain organic molecule yields the following data t/s 1 2 3…

A: Mean life time of a reaction is defined by average life time of all species in a 1st order reaction.

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: Hydrogen purification was conducted at 550 °C using a 3-mm-thick palladium sheet having an area of…

A: Solution :         Diffusion is a process that shows the movement of the particle from an area of…

Q: Blue dye can be decolorized by treatment with bleach. The kinetics of the reaction can be studied by…

A: Given: Absorbance = 0.70 Concentration of dye = 9.05×10–6 M path length of the cell = 1.00 cm

Q: In a study of the formation of HI from its elements,H₂(g)+I₂(g)→ 2HI(g) equal amounts of H₂ and I₂…

A: a.

Q: Explain the similarities and differences of phosphorescence and fluorescence in view of atomic and…

A: phosphorescence and fluorescence are the emitted radiation by the substance that has absorbed light.

Q: Calculate

A: Explanation

Q: The spacing between bands of color in a chemical wave from an oscillating reaction is measured to be…

A: Given data is as follows: The wavelength of the wave = 1.2 cm The time taken to appears a new wave =…

Q: Explain why the velocity constant (k) of the complex reaction [Co(NH3)5N3]2+ with [Cr(H2O)6]2+ is on…

A: The combination of the appropriate ligands to the metal ion provides the corresponding coordination…

Q: The following stands for the frequency factor in the Arrhenius equation.    Ea  R   A k

A:

Q: Justify your answer: Table 4. Half Life of CO, at Different Initial Pressures Pcoz. Half Life Bar…

A: From part-1 (Integrated rate law), the order of the reaction is calculated as 1st order from the…

Q: 3. Calculate the average polymer length in a polymer produced by a chain mechanism in which…

A: We have to calculate the average polymer length in a polymer produced by a chain mechanism in which…

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: In the photochemical decomposition of ethylene iodide, C2H4I2 + hv --> C2H4 + I2, with radiation of…

A: given data wavelength 4240 A v=41.14 ml 0.0050N sodium thiosulfate solution intensity 9.15 erg/sec

Q: Radioactive iodine-131, used in radiotherapy to treat cancer, has a first-order half life of 8.0…

A: Given that : Half-life of iodine-131 = 8.0 days We have to determine the time it take for 15% of the…

Q: The luminescent first-order decay of a certain organic molecule yields the following data t/s 1 2 3…

A: Given:            data of luminescent first-order decay of an organic molecule            variation…

Q: Calculate the rate constant for the first-order decay of ^43K (t1/2 = 2.33 h)

A:

Q: The rate law v=(kr1[A][B])/(kr2 + kr3[B]1/2) was established in a series of experiments. Identify…

A: The rate law v=(kr1[A][B])/(kr2 + kr3[B]1/2)   (i) an order with respect to A = 1   (ii) an order…

Q: 8. What is Glass transition, give two ways it can be detected, also discuss difference between first…

A: Glass transition temperature also called Tg is clear from name that is the transition of material…

Q: (Q3) (a) Derive the Langmuir adsorption isotherm in terms of pressure of a diatomic molecule for the…

A: We have a diatomic molecule A2 (like H2) that is getting adsorbed on a surface according to the…

Q: The reactant 1,3-cyclohexadiene can be photochemically converted to cis-hexatriene. In an…

A: GivenPower of source = 100 WMoles of product = 3.5 mmolWavelength of light = 280 nmTime = 20 seconds…

Q: Tartaric acid can be titrated with a standard alkali. A 25.0 cm3 sample of the acid was exactly…

A: Volume of tartaric acid = 25.0 cm3  Volume of alkali, KOH = 27.5 cm3  Molarity of KOH = 0.10 mol/L

Q: Discuss how X-rays suitable for macromolecular studies are generated “in-house”. What are the…

A: Answer - X -ray - X-rays are commonly produced in X-ray tubes by accelerating electrons through a…

Q: What is an adsorption isotherm? Describe Freundlich adsorption isotherm.

A: An adsorption isotherm is a curve relating the equilibrium concentration of a solute on the surface…

Q: The decay constant of chemical in water = 0.0295 Half-life of chemical in water = 9.5 days OH…

A:

Q: I Need —> 1. Try fitting these data using Langmuir Isotherm and obtain K and monolayer of ORA…

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.