(a) Calculate the energy of a single photon of light with a frequency of 3.22×108 s-¹. Energy = J (b) Calculate the energy of a single photon of blue light with a wavelength of 473 nm. Energy = J

Q: 31. A bottle contains 59 mL of lemon extract solution. If the solution contains 49 mL of alcohol,…

A: Q.31 Given: Volume of lemon extract solution = 59 mL Volume of alcohol in the solution = 49 mL

Q: . What is the frequency of a particle having a wavelength of 3.33 × 10¹ºnm?

A:

Q: If 3.104 moles of C6H5NH3Cl are dissolved in 423 L of water, what is the pH? Give an answer to 3…

A: Here we are required to find the pH.

Q: Part A Why is the E1 not a likely mechanism when 1-chloropentane is heated in ethanol? The substrate…

A: Elimination reaction proceeds via two mechanism:  E1 mechanism: In this mechanism, there is a…

Q: Calculate the PCa vs. EDTA titration curve for 50.0 mL of 0.0060 M Ca2+ being titrated with 0.0150 M…

A:

Q: Provide the reagents necessary to carry out the following conversion. CI (A) HN3 in water B HN3 in…

A: Given reaction is nucleophilic substitution reaction.  N3 substitutes Cl.

Q: 1. NaBH4 (0.25 eq.), H₂O 2. MgBr (1 eq.), CH₂CH₂OCH₂CH3 3. DCI, D₂O

A:

Q: Draw the alkene product which results when 1-bromopentane is heated in acetone containing NaOH.

A: Given : name of reactant.  Tip : E2 elimination reaction will occur

Q: A chemist adds 1.50L of a 4.3x10−5/mmolL silver(II) oxide AgO solution to a reaction flask.…

A:

Q: So why do we use counting words instead of numbers?

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Q: Which electron configurations of neutral atoms represent excited states? [Kr]5s¹4d5 [Xe]6s²4f¹…

A: we have to select the electron configurations that represent excited states

Q: The distance between two charges is doubled. What happens to the potential energy?

A:

Q: H3C-CH₂-C-N_CH3 + NaOH H/4₂0 #2 = HD HI #20 heat # 9-40 H₂C-CH₂-C²-N-CH3 + HCl Homb- un heat H₂O и…

A:

Q: A sample of an unknown metal (c = 0.485 J/g*K) is heated to an initial temperature of 91.9 °C. It is…

A:

Q: A sample of copper metal, originally at 100°C is placed into a sample of water whose temperature is…

A: Given the copper metal is at a higher temperature of 100 oC water is at a lower temperature of 15 oC…

Q: Express the concentration of a 0.0120 M aqueous solution of fluoride, F−, in mass percentage and in…

A:

Q: Consider the following reaction: Na₂CO3 + CaCl₂.2H₂O When 61.50 grams of CaCl₂ - 2H₂O was reacted…

A: Given -> Weight of CaCl2.2H2O = 61.50 gm  Na2CO3 + CaCl2.2H2O -----> CaCO3 + 2NaCl +2H2O

Q: Fill in the table below indicating what is important in each category for an SN1 reaction and an SN2…

A:

Q: What would be the overall yield to produce the peptide below by solid-phase synthesis if each…

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Q: Write a concentration vs time plot for the reaction of Na2S2O3 and HCl

A: To plot the concentration v/s time plot for the reaction of Na2S2O3 with HCl.

Q: Provide the molecular formula of an alkane that has 10 C atoms. Draw two isomers of this alkane.

A: Isomers are the compounds having same molecular formula but different arrangement of atoms.

Q: Would Platinum react with silver nitrate? why or why not ?

A: Reaction given:  Platinum with silver nitrate

Q: Select all of the correct statements about equilibrium from the choices below. At equilibrium the…

A: The given problem is based on the concepts of chemical equilibrium.

Q: Draw the Newman projection of the following compound looking down the bond indicated via the arrow.…

A:

Q: The standard cell potential E°(cell) is +0.77 V for the redox reaction 2 Fe³⁺(aq) + H₂(g) → 2 H⁺(aq)…

A: Here we are required to find the standard potential for the half reaction.

Q: Complete and balance the following half-reaction in basic solution. O2 (g) ---> H2O (l)

A: A redox reaction is balanced by balancing the mass and charge. Hence the number of atoms of all the…

Q: Beaker 1 2 3 4 5 .15 M Na₂S₂O, mL 50.0 40.0 30.0 20.0 10.0 H₂O mL 0.0 10.0 20.0 30.0 40.0 [Na₂S₂O,…

A: We have to plot the Concentration of Na2S2O3 vs Rate of reaction. Concentrations are given in…

Q: A chemistry student needs to standardize a fresh solution of sodium hydroxide. He carefully weighs…

A: Given: Mass of oxalic acid = 10 mg Volume of oxalic acid = 250 mL Volume of NaOH solution = 12.2 mL…

Q: 204 14. Which has the strongest attractive force present between the two? a. CH₂CH₂OH and CH₂NH₂ b.…

A: Order of intermolecular force of attraction -> Ion-ion > Ion - dipole > hydrogen…

Q: 17) Chemical Formulae: C₁2H18 8 4H, Doublet Triplet Triplet Doublet 7 6 5 4 PPM Quartet, 2H 3…

A: 1H-nmr provides the information of hydrogen environment of the unknown compound.

Q: :0: :J: :10. :O: :O: :O:

A:

Q: Complete each row of the table below by fill 1 m Pa 1 Pa www 1 k Pa 1 ра 11 10 = 10 11 10 = 10 О Pa…

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Q: Select the correct IUPAC name for the following organic substrate, including the R or S designation…

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Q: Calculate AHdissolution, the enthalpy for the dissolution process in water, per mole of NaOH.

A:

Q: An aqueous mixture contains CH3NH3Cl 0.44 mol/L, C6H5COOH 0.08 mol/L and LiOH 0.25 mol/L. What is…

A: Here an aqueous solution contains  0.44 mol/L of  CH3NH3Cl , 0.08mol/L C6H5COOH and  0.25 mol/L of…

Q: H₂(g) + I2(g) 2HI(g) 0 AG for the reaction is 2.60 kJ/mol at 25°C. What is the minimum partial…

A:

Q: Draw the product of an SN2 reaction shown below. Use wedge and dash bonds to indicate…

A: Given,

Q: How many milliliters of a 15.51% CuSO4 solution can be made with 407 mg solute?

A:

Q: For the chemical reaction shown, 2H₂O₂(1) + N₂H₂(1) - 4H₂O(g) + N₂(g) determine how many grams of N₂…

A:

Q: 2. The table below shows the solubility data (in g of solute per 100 mL solvent) for compound X in…

A: We are given data for the solubility of compound X in three different solvents at hot and cold…

Q: how to find screening constant for elements like for example, He?

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Q: Question 3 Which sentence is false about EDTA? A. Alkali medium is required for complex ion because…

A:

Q: Which of the following is a polyatomic ion? O NACIO O CI-1 O C1₂06 SOCIO-1

A: When a neutral atom donates an electron, its positive charge becomes greater than the negative…

Q: 10 Draw a structural formula for the cycloalkene with the molecular formula CH₁0 reacts with Cl, to…

A:

Q: When a sample of a hydrated CaBr was heated to a constant weight, 3.24 g of the anhydrous (dry) CaBr…

A:

Q: What are ALL of the products when adding hexa-1,3,5-triene and bromine in CCl4? I know how to get…

A: The answer is given below:

Q: Balance the following redox reaction in acidic solution. 2+ NO(g)+Zn (aq) NO3(aq) + Zn(s)

A: Redox reaction: Redox reactions are reactions in which one species is reduced and another is…

Q: If it is known that a 45.2 mg sample of phosphorus reacts with excess selenium (Se) to form 131.6 mg…

A:

Q: H CH3 Br NaOEt/ EtOH

A:

Q: The following two solutions are mixed : 376 mL Be(OH)2 0.000683 M and 302 mL nicotine 0.000162 M…

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.