Calculate the longest wavelength in Pfund series of the spectral lines of hydrogen atom.   A. 7460 nm    B. 1875 nm   C. 820 nm      D. 2279 nm   E. 1458 nm

Q: Amy is 66 years old postmenopausal white woman living in Hawaiʻi. Her height is 5'4". weight is 105…

A: In postmenopausal female there is harmonla changes seen which includes estrogen decrease, which is…

Q: Which liquid, water or hexane (C6H14) would be a better solvent for CCI4. impossible to tell hexane…

A:

Q: What is the pH when 1 mole of HCl is added to 1 mole of Na3AsO4 (arsenic acid) in a 1 liter volume?…

A: Na3AsO4 is sodium salt of arsenic acid. So when HCl is added to it , they will react to give…

Q: Copper metal can be produced by heating copper(II) oxide and hydrogen gas. Another product of the…

A:

Q: What is the mass number of an isotope with an atomic number of 57 and that has 72 neutrons?

A:

Q: 1) Consider the salt of the metal M and the anion A, of formula MA2. In the compound MA2 the…

A:

Q: For a chemical reaction that is spontaneous at standard conditions, which of the following holds?…

A:

Q: 10. What the product of the following reaction. 1./ MgBr (*xcess) 2. H20

A: When ester react with excess grignard reagent then tertiary alcohol is formed.  For more than one…

Q: Question I1 For the reaction at 25°C:cdC"|F"|Fe Determine E° Deter mine AG° De termine K

A:

Q: NH fe step 8 lease wite step by mechanism.

A:

Q: How to predict the probably mode of decay for? a. Americium-243 B. Nickel-59 C. Oxygen-21

A: Nuclear reaction can be defined as a reaction in which the structure of an atomic nucleus get…

Q: The reaction of CaCO3(s) to produce CaO(s) and CO2(g) has an equilibrium constant at 25°C of 2 x…

A: Given reaction is :  CaCO3 (s) <-------------> CaO (s) + CO2 (g) , at 25 0C, k = 2 x 10-23…

Q: Liquid A is known to have a higher vapor pressure than Liquid B. Use this fact to predict the result…

A: Q.1) it's impossible to predict whether PA and PB will be greater without more information.

Q: When LiBr dissolves in water the AHsolution = -49 kJ/mol The sum of the AHnydration of Lit and Br is…

A: Given that -  For the reaction -  Li+(g) + Br-(g) ----> LiBr(s)    ∆Hsolution = -49 kJ/mol…

Q: The combustion of propane (C3H8) produces CO2 and H2O:                      C3H8(g) + 5O2 (g) --->…

A: Given that Moles of C3H8 = 4.6 mol Moles of O2 = 2.5 mol

Q: Name: Date: Equilibrium Expression Calculations Assignment 1. At equilibrium a flask was found to…

A:

Q: Fia Fill in the product(s) or reactant missing from the for 3 reactions below. CH3 Br OH SOCI2 NBS 2…

A: Given,

Q: VII. What Grignard reagent and what carbonyl compound might you start with to prepare the following…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: The following pictures represent solutions that contain a weak acid HA (pKa = 5.0) and its potassium…

A:

Q: S) Show the steps necessary to make 4-methylhexanoic acid using a malonic ester synthesis.

A: To synthesis a Product 4-methylhexanoic acid usic malonic ester as starting material ....

Q: Please show complete solution and apply all units A gaseous mixture contains 18% oxygen, and 78%…

A: Given :  Percentage of oxygen = 18 %  Percentage of nitrogen = 78 %  Mass fraction of oxygen gas =…

Q: Which of the following is expected to show aromaticity? CH CH HC CH NH O none of the above is…

A:

Q: ng question Fe3*(aq) + 3e → Fe(s) E° = -0.04V Ni+2 (ag) + 2e > Ni(s) E° = -0.24V Zn2*(aq) + 2e →…

A: Formula used Eorxn = Eocathode - Eoanode

Q: Question 1l For the compound Br Ci Name the rompound Identify each chiral center c isomers possible…

A:

Q: Calculate the standard entropy change for the industrial synthesis of urea, a common fertilizer.…

A:

Q: КОН Br +

A:

Q: In the reaction shown by the chemical equation below:   2 Au (s)  +  3 Zn2+ (aq)  à  3 Zn (s)  +  2…

A: Option c is correct  Zn is reduced  Zn2+ after accepting or gaining 2electron form zinc metal and…

Q: please explain how to synthesize the following molecule using only benzene or 2-carbon molecules.…

A:

Q: A Cempound circular curve have: - R1= 290.75 m, A- 40' 14', C=175 m, - Stat. P.C. - 50 + 10, P.C…

A:

Q: If you have 2.0 grams of a radioactive substance left after 5 half-lives, how much did you start…

A:

Q: When a AH>0 and TAS<0 the reaction will be: а. spontaneous O b. system is an equilibrium С. not…

A: The reaction will be not spontaneous if  Delta G &gt; 0  And in this question we have to tell that…

Q: 6. The mercury in a 0.839 g sample was precipitated with an excess paraperiodic acid, H¿IO, SHg* +…

A: Given reaction is :  5Hg2+ + 2H5IO6 -------&gt; Hg5(IO6)2 + 10 H+  Given mass of the sample = 0.839…

Q: Light of wavele'ngth λ0 in a vacuum has a wavelength of 452 nm in water and a wavelength of 412 nm…

A: Given the wavelength of light in water, λ = 452 nm Wavelength of light in vacuum = λo Refractive…

Q: Can someone explain which carbon the stereochemistry is inverted and how to arrive at the specific…

A: A question based on introduction to organic chemistry that is to be accomplished.

Q: 8. What is the pH of a 0.20M solution of sodium acetate? The K, for acetic acid is 1.8 x 10-5 ?

A:

Q: What is the melting point of the substance modeled by this heating curve? F. 150 135 120 D 105 90 75…

A:

Q: GeF3H is formed from GeH4 and GeF4 in the combination reaction:…

A:

Q: VIII. How would you prepare the following compounds from 2-phenylethanol? More than one step may be…

A: Preperation of given products from starting material or compounds 2-phenylethanol is

Q: 2-aminophenol hydrochloride is pictured at right. As is, the acid is fully protonated, the H from…

A: 2-aminophenol hydrochloride, HO-C6H4-NH3+Cl- is a diprotic acid with pka values of pKa1 = 4.70 and…

Q: Benzene C6H6 has all atoms in the same plane. Explain the reason by using hybrid orbitals.

A: A question based on introduction to organic chemistry that is to be accomplished.

Q: Question 4 What is the mass % of NaCl In a mixture that Is prepared by dissolving 2.40 g of NaCl In…

A: Mass of NaCl = 2.40 g  Mass of H2O = 65.5 g  Mass % of NaCl = ?

Q: Curriculum Expectation B3. demonstrate an understanding of the structure, properties, and chemical…

A:

Q: 1. chemical method of water treatment 2. the way of special water treatment 3. physical method of…

A: Ozonation is a type of oxidation process involving the production of very reactive oxygen species.

Q: (SNl and El heat Br

A: This is E1 reaction, because the reaction condition shows heat, and we have studied that heat is…

Q: The reaction in the above picture would take place where? A) radioisotope thermal generator B)…

A: A) radioisotope thermal generator used a radioactive isotope which will decay into non radioactive…

Q: A sample of 0.900 mol N2O is placed in a sealed container, where it decomposes irreversibly to N2…

A: Here we are required to find the time required for the reaction to be 90% complete if it's first…

Q: Question 1 If 10 drops of pyruvic acid (HC3H3O3) are titrated with 20 drops of 0.25 M NAOH, what is…

A: Answer: Hydrogen concentration of a solution is equal to the negative of the logarithm of hydrogen…

Q: Which of the following is a zwitterion?

A: Zwitterion structure:  Zwitterion it is a dipolar ion Amino group which contains a positive group…

Q: How much energy is required to change the temperature of 15.0 g Fe from 18.5oC to 56.8oC? The…

A:

Q: A) R-C=CH-CO0 ONH 3 B) R-CH-CH2-CO0 NH3 C) R-CH-COO NH3 D) R-CH-C-COO NH3

A:

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.