How does the quantization of energy explain the observed photoelectric effect and emission of UV energy? Using the equation E = hc/A, calculate the energy of a photon with a wavelength of 640.0 nm. Assume h = 6.626 x 10-34 Js and c = 2.998 x 108 m s¯¹.        Please type answer not write by hend

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A: Esters on acidic hydrolysis give one molecule of carboxylic acid and one molecule of alcohol.LiAlH4…

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Q: Match the following aqueous solutions with the appropriate letter from the column on the right.…

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Q: 3. Give the abbreviated electron configuration for each of the fo A. Sn B. sulpher C. bismuth

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Q: ö r. S. QM OH & NO₂ H₂CRO4 A H₂, Pd/C H₂ & = Pd/C NO₂ YQ= HNO3 H₂SO4

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Q: 80 70 60 50 40 30 20 10 0

A: C=O (in ketones) : 205 - 220C=O (in aldehydes): 190 - 200C=O (in acids and esters): 160 - 185C in…

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Q: A solution contains 1.42×10² M iron(II) acetate and 7.26×10°³ M magnesium nitrate. Solid potassium…

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Q: The second step is an incorrect answer

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Q: Air is in a piston/cylinder setup at 2000 kPa pressure and 290 K temperature (see below figure). Air…

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Q: A 100-ml reaction vessel initially contains 2.60 x 102 mol of NO and 1.30 x 102 mol of H₂. At…

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Q: F. 1) LDA, THF, -78 °C 2) CH3-1, -78 °C i OET 2 equivalents G. NH₂ 1) NaOEt, EtOH 2) dilute H₂O 1)…

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Q: Molecular formula:    C8H7OCl Idetify the unknown  =2.5 , 3H singlet  =7.5 , 4H quartet

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Q: Provide the major organic product of the following reaction. Ph Ph NH₂ NH₂ 1. NaN3 2. LIAIH₂ 3. H₂0

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Q: Problem 12 EC: Together, a pure gold ring and a pure titanium ring have a mass of 15.98 g. Both…

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Q: a. How many grams of calcium bromide, CaBr2, are present in 1.43 moles of this compound? grams b.…

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Q: Polymers may be composed of thousands of monomers. Draw two repeat units of fluoroethene. Assume…

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Q: that at a certain temperature C(s) + 2 H₂O(g) H₂(g) + CO₂(g) CO₂(g) + 2 H₂(g) H₂O(g) + CO(g) A k

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Q: Consider 0.10 M solutions of the following compounds: Sr(C3H5O3)2, Co(ClO4)3, KOBr, CsOH, and NaCl.…

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Q: Predict the product of the following reaction. -NH₂ HCH వరవర రవార IV

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Q: Which compound would produce the given ¹H NMR spectrum below? O of A. B. ли PPM C. HO D. E.

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Q: 0901 A) H2SO4, H2O B) Br2, CC14 C) (i)Hg(OAc)2, H2O (ii) NaBH4, NaOH D) i) 03 ) (CH3)2S H) HB,…

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Q: Which of the following bonds is most likely to be an ionic bond? O Na+ bonded to Cl- in salt OC…

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Q: What is equilibrium constant K for the following reaction at 25°C with a AG* of -16.4 kJ/mol? 3H₂(g)…

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Q: Which of the following is least likely to undergo a smooth crossed Claisen condensation with methyl…

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Q: The Solubility Product Constant for lead phosphate is 3.0 × 10-4. The molar solubility of lead…

A: Solubility product constant for lead phosphate = 3.0 × 10-44.Molar solubility of ammonium phosphate…

Q: OH Type of Reaction: b) Type of Reaction: + (0) ОН + H₂SO, CH3 + CH3 НО -CH3 H₂SO₂

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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.