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

Q: Consider an exponential decay function P(t) = P0e-lt, and let T denote its time constant. Show that,…

A:

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: The decomposition of NOBr is studied manometrically because the number of moles of gas changes; it…

A: The average rate of decomposition is the rate of change of concentration of the reactant with…

Q: The enzyme-catalysed conversion of a substrate at 298 K has KM = 0.032 mol dm−3 and vmax = 4.25 ×…

A:

Q: Calculate the orders of the reaction with respect to I–, BrO3 , and H+ – using the aforementioned…

A: The rate of the reaction is referred to the change in the molar concentration in the distinct…

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: P17B.3 The data below apply to the formation of urea from ammonium cyanate, NH,CNO → NH,CONH,.…

A:

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

A: The data given is,

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

A:

Q: Chemistry A young adult (60 kg body weight) drinks two beers of 12 oz. each, over a period of 10…

A: #(b): A 60 Kg body weight person has approximately 36 L (60%)  of body water. Given the person…

Q: A dye degradation experiment was carried out and the rate law was determined to be: rate=k[A]2. The…

A: Rate = K[A]2 So, it is a second order reaction.K + =  1[A]+ - 1[A]0[A]0 = 1[A]+ = 0.00125t = 60 sec…

Q: The enzyme-catalysed conversion of a substrate at 25 °C has a Michaelis constant of 0.046 mol dm−3.…

A: The value of Michaelis constantKm is 0.046 mol dm-3. The rate of reaction (r) is 1.04 m mol dm-3…

Q: An elementary reaction is generally expressed as: dCa = -kC," dt where A is the species being…

A: Аn  elementаry  reасtiоn  is  а  сhemiсаl  reасtiоn  in  whiсh  оne  оr  mоre  сhemiсаl  sрeсies…

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

A:

Q: The Langmuir adsorption isotherm can be written as the equation: kP 1+ kP State the assumptions made…

A: Assumptions made in the Langmuir model is: 1) all adsorption sites are equivalent and is independent…

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

A:

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: You have measured the absorbance of the enzyme-catalyzed reaction using alkaline phosphatase (E) and…

A: To velocity of the reaction is the change in the absorbance per unit time.

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

A: Given:KM = 0.032 mol.dm-3Vmax = 4.25×10-4 mol.dm-3s-1.Enzyme concentration [ET] = 3.60×10-9…

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: 6. The enzyme-catalyzed conversion of a substrate at 25°C has Michaelis-Menten constant of 0.035 mol…

A: Micellization is considered as a dynamic phenomenon in which there are n monomeric surfactant…

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: What are the significance of the value of the slope, the value of the y-intercept, and the…

A: Half-life is the time taken by a  sample to reduce its initial value to half. The general…

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

A:

Q: Using Freundlich adsorption isotherm calculate the extent of adsorption of a dye on activated carbon…

A: Extent if absorption would be calculated as follows

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: 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: (Q3) (c) What are the limitations of Langmuir adsorption isotherm?

A:

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

A: In order to calculate the quantum yield First of all, total energy delivered to the source is…

Q: Given the following plot for the decomposition of N2O5, calculate the frequency factor (A):

A: we are required to find the frequency factor (A) from the plot of ln K vs 1T  for decomposition of…

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: P17B.3 The data below apply to the formation of urea from ammonium cyanate, NH CNO NH,CONH.…

A: The 1 dm3 is equivalent to 1 L. The number of moles n(AC) of ammonium cyanate is calculated as shown…

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: 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: The decomposition of NOBr is studied manometrically (with a manometer) because the number of moles…

A: Given: Time (s) [NOBr] (M) 0.00 0.0100 2.00 0.0071 4.00 0.0055 6.00 0.0045 8.00 0.0038…

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: In water, the fluorescence quantum yield and observed fluorescence lifetime of tryptophan are Øf…

A: We have to find fluorescence rate constant from given fluorescence quantum yield and lifetime

Q: The following data were obtained on the initial rates of a reaction of a d-metal complex in aqueous…

A: Given information: (a) [Y] = 2. 7 mmol dm-3  (b) [Y] = 6.1 mmol dm-3

Q: O3Ni decays by a first-order process via the emission of a beta particle. The 63NI isotope has a…

A:

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

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.