What is the velocity of electrons emitted from K metal (threshold energy = 2.25eV) using incident radiation of 6.2eV. Input only answer for velocity in m/s

Q: Which of the following atoms is paramagnetic? A) AI В) Ва C) Kr D) Zn E) Хе

A: Which of the atoms is paramagnetic ?

Q: 3) Indicate the product of the following stages of peptide synthesis by drawing the appropriate…

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Q: Which H atom in the molecule shown below will be most readily abstracted by a bromine radical?…

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Q: Compound X, C,4H12Br2, is optically inactive. On treatment with strong base, X gives hydrocarbon Y,…

A: The compound formula = C14H12Br2 Degree of unsaturation (DBU) = 14 - (12÷2) - (2÷2) + 1= 8 Degree of…

Q: Chemistry label the peaks you would see on an IR spectra for this molecule. H но H. H. H H

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Q: D Question 36 Which of the following additions to alkenes occur(s) specifically in an anti fashion?…

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Q: Thorium-234 has a half-life of 24.1 days. Suppose the initial amount of Thorium-234 is 162.9 mg,…

A: All natural and artificial radioactive decays follows first order kinetics The integrated rate…

Q: 1. Based on the theoretical result, what is the order of reactivity of primary, secondary, and…

A: Since you have asked multiple questions, we will answer the first one for you. To get the remaining…

Q: For each reaction, calculate AH AS, and AG at 25 °C and state whether or not the reaction is…

A: To find out the value of ΔHrxn°, ΔSrxn° and ΔGrxn° at 25°C that is 298 K and also predict whether…

Q: than the actual pH reading.

A: Please find the solution attached below-:

Q: जवार कैरेपजेक"स्ळे ohe oonmठरी बेटनेी०नौट वकाले हकनेकेट लपटटणकीट +hखे मएवरके केव प्रोण्ट केनट बोलो ४…

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Q: Salt bridge Ag .02M Cu(NO,), 3M AgNOS .02M CuNOs Je(ag) .02M CulNNO, AgNOgcag) 3M

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Q: 1 ppm 1. Determine the minimum number of hydrogens present in the compound? 2. If the compound has…

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Q: For the following reaction situation, select a correct product characterization using the response…

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Q: I)Which of hydrogens a-d in the following molecule gives a triplet signal in a normal 1H NMR…

A: NMR spectroscopy is a very important tool for the determination of the structure of the organic…

Q: 7. Draw a molar mass distribution curve, and label Mn, Mw and M. Describe why PDI is important, and…

A: As per the guideline, since you have asked multiple questions, we have solved the first question for…

Q: 1 Draw the major organic product of this first step in Box 2.

A: In sulphonation reaction, there is reaction of phenol with concentrated sulphuric acid.

Q: Which of the following alkenes could be used to produce the following alkyl bromide as a major…

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Q: The dissolution of ammonium nitrate occurs spontaneously in water. As NH4NO3 dissolves, the…

A: According to the second law of thermodynamics, the spontaneous nature of the reaction is determined…

Q: Label the stereocenter in the following molecule as Ror S. ОН

A: Assign priorities to the groups attached to the chiral centre as per CIP rule(Cahn-Ingold-Prelog) If…

Q: Determine the concentration in molarity of 100ml acid solution used in titrating a 67.119g of sodium…

A: Introduction :  Molarity of a solution is defined as the number of moles of solute present in one…

Q: Calculate the [NO3 1-] in a 2M Ca(NO3)2 solution

A: Given that, [Ca(NO3)2] = 2M then,

Q: Which of these macromolecules is described on a nutritional label as "fiber" or "dietary fiber"?…

A: Dietary fibre includes the parts of plant food which our body can't digest or absorb.

Q: to 50.0°C. If the pressu gas? a.) 38.6 mL b.) 87.5 mL c.) 31.8 mL d.) 35.0 mL e.) 52.5 mL

A: Given,  V1 = 35.0 mL T1 = 20 °c = 293 K T2 = 50 °C = 323 K V2 =

Q: D K oCH,CH,CH(C)CH ÓH *C, H and "I" have been intentionally not used as labels to avoid being…

A: a) A- doublet(attached to carbon with one hydrogen, using (n+1)rule ) D- multiplet (sextet) F-…

Q: a. Provide one similarity between an SN1 and an SN2 reaction mechanism. b. Draw a fully labelled,…

A: Nucleophilic substitution reactions are defined as reactions in which one nucleophile is replaced by…

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Q: Which of the following compounds could not be oxidized to a carboxylic acid? O propanal O…

A: Correct option is C.

Q: if you tritate 10.00 mL of vinegar with .310 M NaOH and determine that the end point is reached…

A: Vinegar contains acetic acid , so NaOH react with Acetic acid to neutralize it.

Q: 3.2 The standard Gibbs energy of formation of H0 at 25.0 °C, AG°, is -228.57 kJ.mol', for a standard…

A: ∆rG° is the Gibbs free energy of reaction which is expressed as: ∆rG°=∆fG°(products)-∆fG°(reactants)…

Q: Given 1 mole of gas in a 1 L container at 0.00 C, What is the pressure?

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Q: The values ​​of the standard reduction potentials of different metals are given below Ba2+ + 2e ---…

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Q: chemistry organic chemistry synthesis. please ssteps Org Meú Nhe ph ph help the struggle is real. 5…

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Q: Write the complete ground-state electron configuration of

A: S2- Atomic number of S = 16 ->S2- means 2 electrons are added in S.

Q: How many moles of H* (what coefficient would be present in front of H") are present in the balanced…

A: Balancing redox reaction by half reaction method (acidic medium) Divide the equation into oxidation…

Q: CH3 CI-s-CH3 1. + N(CH2CH3)3 ? 2. NaSCH2CH3 НО Predict the product(s) that will form in the reaction…

A: A single chiral product will formed. In first step hydroxy group convert to sulfonate group with…

Q: Suppose you completely react 13 mL of 1.0 M NaOH with 0.50 M HCI. Calculate the volume of HCl…

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Q: Chemistry Draw the main product of the following reaction. Show stereochemistry in product structure…

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Q: A carboxylic acid has a pKa of 6.00. Which of the following statements is true? O A. There is an…

A: pKa for a weak acid is related to pH and concentration as per Henderson Hasselbalch equation.

Q: Calculate to three significant digits the density of dinitrogen dinuoride gas at exactly 15 "C and…

A: Given- Temperature=15°C=(15+273)K=288K Pressure= 1atm

Q: 2) Calculate the K for this reaction: 2Fe** (aq) + Pd 2Fe*(aq) + Pd* (aq)

A: Given reaction: 2Fe+3(aq) + Pd ⇄ 2Fe+2(aq) + Pd+2(aq) We have to calculate the value of K for this…

Q: The equation of the line for an Abs vs. [FESCN^2+] plot was determined to be y=4462.2x - 0.00329.…

A: 1) Given: The plot of absorbance v/s concentration of FeSCN2+ is a straight line with equation as,…

Q: A chemical reaction is always spontaneous if it is accompanied by Oa. endothermic and increasing…

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Q: Question 12 What is the final product of the following reaction: Hint/reminder: a rearrangement…

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Q: The titration curve attached was obtained from the titration of a 0.225 g sample of a solid acid…

A: From the titration curve, pH at the equivalence point is equal to 7.

Q: Why is it important to follow the guidelines (Aufbau principle, hund's rule, paul exclusion…

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Q: A 0.25 g sample of an unknown solid is dissolved in 8.85 g of cyclohexane. The change in the…

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Q: 22 N204 # valence electrons Draw Lewis structure Electron geometry: name and draw Molecular…

A: The given molecules are N2O4 and PO3-

Q: exactly 250.0 mL in a volumetric flask. A 50.0 mL aliquot is withdrawn with a pipet and titrated…

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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.