. What is the frequency of a photon with wavelength, 455 nm? What is the energy of a mole of these photons?

Q: In EDTA titrations, why does the pH of the solution need to be controlled?

A: Given:In EDTA titrations pH of the solution need to be controlled. We have to explain why pH of the…

Q: Suppose the vapor pressures of two components of a binary solution are given by: P1 =…

A: Given, = Here, x1 is the mole fraction of component 1 and x2 is the mole fraction of component…

Q: If 30.0 mL of 0.150 M CaCl₂ is added to 16.0 mL of 0.100 M AgNO3, what is the mass of the AgCl…

A: The question is based on the concept of reaction stoichiometry.We need to calculate mass of…

Q: Solid potassium sulfate is slowly added to 50.0 mL of a lead(II) cyanide solution until the…

A: The question is based on the concept of solubility product principle.It states that when a weak…

Q: Draw the major product of this reaction. Ignore any inorganic byproducts. HBr (1 equiv) Atoms, Bonds…

A: An arrow always depicts from a region of high electron density to low electron density ; that is…

Q: The fluoride ion is the conjugate base of the weak acid hydrofluoric acid. The value of K, for F, is…

A: A weak acid is defined as the acid which partially dissociates into its ions in a solution.According…

Q: Write down all the steps of the reaction of 2-Methyl-2-hexene with sulfuric acid and name the…

A: We have to give the product of the reaction between 2-methyl-2-hexene and sulfuric acid.So, the…

Q: Calculate the cell potential for the galvanic cell in which the reaction Cd(s) + Cu²+ (aq) Cd²+ (aq)…

A:

Q: What is the major organic product obtained from the following reaction? OB A OD OC A. N GO H* B. C.…

A: The reaction between cyclohexanone with secondary amine results in the formation of enamine which is…

Q: For the following electrocyclic ring closure reaction a. Give the curved arrow pushing and the major…

A: The given reaction is .We have to give the product of the given reaction.

Q: Give detailed mechanism Solution with explanation needed..don't give Handwritten answer

A: Markovnikov's rule is used for addition of unsymmetrical reagent to the unsymmetrical alkenes and…

Q: 2. Calculate 4G in two different ways for the dimerization of NO2. The first method uses the Gibbs…

A: The objective of the question is to calculate .

Q: The following reactions do NOT provide the major product that is shown. CONCISELY explain why this…

A: An arrow always depicts from a region of high electron density to low electron density ; that is…

Q: For the molecule below: 1. Identify all CHIRAL centers if any are present: 2. Name each CHIRAL…

A: Given cis-1,3-cyclohexane.Basic Cahn-Ingold-Prelog rules: Assign priorities to groups according to…

Q: The cyanide ion is the conjugate base of the weak acid hydrocyanic acid. The value of K for CN", is…

A: A weak acid is defined as the acid that partially dissociates into its constituent ions in a…

Q: A student measures the Pb2+ concentration in a saturated aqueous solution of lead hydroxide to be…

A: Solubility product constant is defined as the product of concentration of ions present in the…

Q: Please predict the products for each of the following reactions: 2. H₂O 1.03 NaNH, 1. n-BuLi 2. Mel…

A: Organic Reactions are given.We have to identify the products formed in the reactions.

Q: Curved arrows are used to illustrate the flow of electrons. Using the provided starting and product…

A: Two reactions are given.We have to draw the curved arrow mechanism of those reactions.

Q: . Na-24 has a half-life of 15 hours. How much of a 20.0 g sample would remai fter decaying for 60…

A:

Q: Calculate the Ksp of the borate dissolution at 25°C, if the 23.14 mL of 0.025 M HCl solution used up…

A: The question is based on the concept of solubility product principle.It states that when a weak…

Q: What is(are) the product(s) when the following substance reacts with Br, in the presence of FeBr37…

A:

Q: B What are the bond orders of H---O, and S---O bonds in a bisulfate ion? H OA. OB. C. 1.33 & 2 1.0…

A: Well, to find the bond order between two atoms of any resonating structure we have to first count…

Q: What is the mass in grams of 34.7 moles of NaCl?

A: Compound NaClNumber of moles = 34.7 Mass of NaCl = ?

Q: Fill in the missing information in the following table. pH POH Solution a 9.69 a. b. с. d. Solution…

A: Given,a. pH = 9.69b. [ OH- ] = 3.3 x 10-6 Mc. [ H+ ] = 0.021 Md. pOH = 1.24

Q: Which of the following take place when CH₂Cl₂ dissolves in water? [Select all that apply.] Some, but…

A: Methylene chloride is a volatile solvent that is used in industry. It is a colorless liquid.

Q: Write the common (not systematic) name of each organic molecule. Hint: your answer should have more…

A:

Q: What is the maximum number of stereoisomers possible for prostacyclin? HO -OH HO prostacyclin

A: We have formula for counting number of Stereoisomers,Stereoisomers = 2nwhere n is number of chiral…

Q: QUESTION 8 The maximum allowable concentration of chloroform in drinking water is 100 ppm. How many…

A: Given:The maximum allowable concentration of chloroform in drinking water = 100 ppm.Mass of total…

Q: Which Newman projection, looking down the C-3-C-4 bond (C-3 in front and C-4 in back), illustrate(s)…

A:

Q: Read the directions and create the graph described below. You will then click the submit button and…

A: First fill up the given values in the computer program excel and then draw the graph using a scatter…

Q: The emissive power (Pe) measured as a function of K concentration gave a calibration curve with a…

A: Use the given value of the emissive power in the place of y and calculate the concentration of K+…

Q: Draw the Lewis structure (with formal charges) of the indicated chemical species. If there is…

A: The Lewis structure is the one where the octet rule of all the atoms is satisfied.The octet rule…

Q: Lewis Dot Structure NH₂ 3-D VSEPR Structure (with Labeled Bond Angles) 4 Lewis Dot Structure SO,¹…

A: Information of question

Q: Write the systematic name of each organic molecule: structure HO–CH,—CH,—CH,—CH,—OH CH₂-OH 4 OH I…

A:

Q: how would you calculate the binding energy (in Joules) for 14 28Si, which has a nuclear mass of…

A: 1.008665 amu

Q: 1. Which is more stable? A. I B. || C. D. E. ||| = || Two of above are stable None of the above |||

A: The conformational isomers are formed by the rotation of a carbon-carbon single bond in a compound.…

Q: 19. How many of the following are addition reactions? A) 3 B) 1 C) 4 D) 2 E) 0 (1) (ii) (iii) (iv) 2…

A: In the addition reaction two compounds undergo reaction with each other resulting in a new chemical…

Q: Calculate the standard potential for: Cu²+ + Br + e = CuBr(s) ECu²+/Cu+ = 0.153 V, Ksp,CuBr = 5.25 ×…

A: Answer:Relation between equilibrium constant and standard cell potential can be generated from…

Q: What is the relationship between the parent structure on the left and the structure on the right? A:…

A:

Q: Draw the major monobromination product of this reaction. NBS, light (6)

A: The given reaction is .We have to give the major product of the reaction.

Q: What is the molecular and electron geometry for SiF62-

A: The hybridization, electronic geometry and molecular geometry of a compound can be determined by…

Q: What is the relationship between the parent structure on the left and the structure on the right?…

A: We have to determine the relation between the compounds shown below.

Q: What is the molarity of a NaOH solution that is prepared by mixing 50.0 mL of 0.350 M NaOH with 125…

A:

Q: If the following molecule cyclized, which of the following statements would be true? H- HO- HO H-…

A: it is the structure of galactose. It is a monosacharide. cyclization results when C5-OH doing…

Q: A student determines the nickel content of a solution by first precipitating it as nickel hydroxide,…

A: Given data :The nickel content of a solution is precipitated as nickel hydroxide. The reaction can…

Q: What volume of oxygen gas is produced when 0.682 mol of hydrogen peroxide (H2O2) reacts completely…

A: For the given reaction,temperature, T =                          = (0 + 273.15) K…

Q: Curved arrows are used to illustrate the flow of electrons. Using the provided starting and product…

A: Curved arrows show the flow of electrons from electron rich species (species containing loan pair or…

Q: Which expression best describes the relationship between the solubility product, Ksp, and the…

A: Answer:Ionic compounds that have low solubility in water are called as sparingly soluble compounds…

Q: OTBS I !!! OH Me™! Im Me H OMe OMe OTIPS Br OTIPS tBuLi, Et₂O, -78 °C 83% OTBS I Me Me I !!!! "H OMe…

A: Carbonyl C atom is electron-deficient C atom. Hence, it is electrophilic in nature. An electrophile…

Q: Calculate the moles of water in 10.00grams of magnesium sulfate heptahydrate. With steps.

A: Magnesium sulfate heptahydrate = MgSO4 . 7H2OMass of Magnesium sulfate heptahydrate = 10gMolar mass…

Quantum Chemistry

Quantum chemistry deals with the properties of chemical systems and their reactions. The branch of chemistry which is more concerned with quantum chemistry is physical chemistry. It is a more sophisticated field of theoretical physics which is concerned towards the application of physical concepts towards various chemical aspects such as, formation of atoms, chemical structure descriptions, chemical bond strength, hybridization, conjugation etc. Quantum chemistry mainly studies the various states i.e., ground state, excited state, transition states of the individual atoms or molecules taking place during any chemical reaction. The laws of motion explained by various scientists, which are termed as “classical mechanics” were not acceptable in terms of electrons, protons, atoms, light etc. Thus, a new theory named “quantum mechanics” emerged to understand the basic framework of various atomic and subatomic particles.