If a photon of visible radiation has a wavelength of 655 nm, what is its energy? O 3.04 x 10-28 J O 4.58 x 1014 J O 3.04 x 10-19 J O 3.29 x 1018 J

Q: mass

A: The mass can be calculated with the formula = Density × Volume   As given, phase 1 contains 8% of…

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Q: 50 3440 72 1641 70 3429 72 1504 60 3343 74 3094 84 3053 84 1427 60 1402 47 1382 70 3003 66 1359 45…

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Q: Predict the product(s) form in each reaction below. i 1. NaOEt 2. NaOH, A NaOEt مہینڈ ja NaOEt

A: Since you have posted multiple questions, we will provide the solution only to the first five…

Q: H12 In a reaction, ASys=-160.4 J/K. What might be the entropy change for the surroundings? A. +245.9…

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Q: The q value for the following reaction is 178.0 kJ for every mole of CaCO3 that reacts: CaCO3(s)→…

A: Dear student since you have posted multiple questions, we have solved first three questions for you,…

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Q: low consider alanine as a whole molecule. Use the Ką values from the chart above, and your…

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Q: 8. Give the repeating unit of the polymers prepared by ADMET polymerization of (a) 1,5-hexadiene (b)…

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Q: Consider the combustion of propane, C3H8: C3H8 (g) + 5 O2(g) → 3 CO2(g) + 4 H2O(1) ArH = -2,220.0 kJ…

A: Heat released by the reaction

Q: Calculate the pH of a 0.0385 M sodium hypobromite solution. Ka (HBrO) = 2.8 × 10−9. Report your…

A: pH of a salt formed from weak acid and strong base is expressed as pH=7+12pKa+log Chere, C is the…

Q: In the reaction shown below, methane is being H H-CH- 02 0=C=0 H reduced and is therefore the…

A: Since, In oxidation reaction, Oxidation number increases or number of oxygen increases or number of…

Q: Propose an efficient synthesis of hexylamine from hexanoic acid. A. of The transformation above can…

A: We know carboxylic acids are weak organic acids and generally, the carbonyl carbon of this part is…

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Q: 5. Acetylene (C₂H₂) can react with water to produce acetaldehyde (C₂H4O) as shown below. Calculate…

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Q: TRANSMITTANCETT D 4000 3000 3364 77 2804 66 3076 68 2736 53 3040 70 2960 17 2936 22 1694 7 1603 1578…

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Q: Provide a strong argument as to why biphenyl ends up in the organic layer

A: Liquid-liquid extraction is a commonly used technique in chemistry for the separation of a desired…

Q: 23. What product is formed during the following reaction? O M= (1) O HO heat (-H₂O) O (II) (III)

A: This is carbanion reaction. in this reaction carbanion attack on another carbanion to form…

Q: Calculate the pH of a solution made of 0.50 g of KHPh and 50.0 mL of water. KHPh has a molar mass of…

A: First calculate molarity of the KHPh solution. Use that molarity and pKa value to calculate the pH…

Q: In the reaction shown below, the reactant molecule is O O OH oxidized and is therefore the oxidizing…

A: •Oxidising agent which is reduced itself and oxidise other compounds.

Q: (b) Using the equation below, explain what happens to maintain the pH of the solution: HA (aq) (i)…

A: A buffer is a system in which there is not much change in pH of system on adding slight amount of…

Q: Chlorous acid, HClO2, is a weak monoprotic acid with Ka = 1.1 × 10−2. Calculate the pH of a 0.869 M…

A: pH of weak acid is given by  pH = 12(pKa)-(12)log(C) where C = concentration of the acid = 0.869 M…

Q: Add curved arrow(s) to draw the final step of the mechanism. ITZ + NN ____+1 +1 +1_${ www охх + H I…

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Q: a H 1) Excess MeI 2) Ag₂O, H₂O, heat ? Modify the given copy of the starting material to draw the…

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Q: Please find bolded info Q (water) = 4.186 Unknown #: III H = q  q= mass x specific heat (cs) x…

A: Water Data: Mass of calorimeter (mass of 1 styrofoam cup): 12.5 g Mass of calorimeter + water: 27.67…

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Q: ¿ ΖΟΝ, 0 H~ 0

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Q: What is the value of Kb for NO₂™? The Ka of HNO₂ is 4.5 x 10-4.

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Q: Calculate the pH of a buffer prepared by adding 0.39 moles of ammonia and 0.44 moles of ammonium ion…

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Q: help #1

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Q: Write the molecular formula for the following compound. XX. He N 8.

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Q: 5. Fill in the table below with the results you expect for the following compounds. Test Compound 1…

A: Tollen's test is used to distinguish between aldehyde and ketone functional group. Tollen's reagent…

Q: which one is more basic? draw a resonance structure

A: we have to select the structure which is more basic

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Q: Which of the following solutes will dissolve in heptane, a non polar solvent? Question 3 options: 1…

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Q: a. What is the equilibrium constant, K, for the reaction between HCN (Ka = 6.2 x 10⁻¹⁰) and OH⁻ at…

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Q: Which one of the following is a buffer solution? 0.4 MHCN +0.2 M NaCH3COO 1,0 M HNO3 and 1.0 M NaOH…

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Q: 9) Diisobutylaluminum hydride (DIBALH) can be used to carry out which of the following conversions?…

A: DIBALH is a reducing agent. It can reduces esters into aldehyde and other functional group like acid…

Q: Can you propose a mechanism for these problems?

A: Reaction-b is include addition of HBr, which is shows markovnikov addition of HBr. After that simple…

Q: Complete the following reaction web. If multiple products are possible, identify them all.

A: Benzene is an electron-rich compound and it undergoes a reaction with an electron-deficient species…

Q: Ll.4.

A: Carbonyl compounds shows an nucleophilic addition reaction.

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.