Calculate the energy of electromagnetic radiation with a wavelength of 379.0nm, in joules per photon and kilojoules per mole of photons

Q: When performing a Grignard reaction it is also very important that the reaction be free from acetone…

A: The concept used in this question is from general organic chemistry.  According to question Grignard…

Q: Ice cubes from the freezer weigh about 25 g and are at a temperature of -15.0 °C. Suppose I have a…

A: The water in the glass will be in equilibrium with the ice until heat transformation occurs from ice…

Q: a. b. Ph Ph OH Br t-BuOK H₂SO4 Heat

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Q: A student ran the following reaction in the laboratory at 655 K: 2NH3 (9) N₂(g) + 3H₂(g) When she…

A: Ammonia decomposes into nitrogen and hydrogen. The equation for the balanced chemical reaction is as…

Q: Exercise: calculate the average atomic mass for the naturally occurring Mg element. The isotope…

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Q: Arrange the following solvents in order of increasing polarity: ethyl acetate -dichloromethane…

A: The concept used here is from basic organic chemistry.  Order of increasing polarity of given…

Q: If to 100 ml of a solution of CH3COOH with a concentration of 0.0928 N. a) 200 ml of distilled…

A: Concentration of diluted solution can we figure out using dilation factor that is final volume of…

Q: HCl(aq)+NaHCO3(aq)→NaCl(aq)+H2O(l)+CO2(g)    The CO2 gas produced is what makes you burp after…

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Q: Water is a polar solvent and hexane (C 6H 14) is a nonpolar solvent. Which of the following…

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Q: Identify each of the following elementary reactions as unimolecular, bimolecular, or termolecular,…

A: Elementary reactions are the reactions which occurs in a single step, all the atoms,  ions or…

Q: What volume of a 0.293 M hydrochloric acid solution is required to neutralize 20.7 mL of a 0.116 M…

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Q: Write the equilibrium constant expression, K, for the following reaction. Please enter the compounds…

A: Equilibrium constant is the ratio of  product of concentration of products raised to their…

Q: Given the standard enthalpy changes for the following two reactions: ΔΗ° (1) N₂(g) + 2O2 (g) → 2NO2…

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Q: A Chemistry student had a cold and took 2.3 teaspoons (tsp) of cough syrup. If the syrup had a…

A: Density = Ratio of mass of a substance to its volume called density  Density = mass/ volume  CGS…

Q: An iron nail rusts when exposed to oxygen. How many grams of iron are needed to completely consume…

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Q: A sample of krypton gas collected at a pressure of 1.00 atm and a temperature of 279 K is found to…

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Q: Write the formula of phenol and benzyl alcohol

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Q: Identify each of the following elementary reactions as unimolecular, bimolecular, or termolecular,…

A: Given reactions: C2H5Cl → C2H4 + HCl HO + NO2 + Ar → HNO3 + Ar O + H2S → HO + HS We have to find the…

Q: Progress and minor product(s) of the following reaction: Br NaOEt EtOH ?

A: This reaction is occurred by E1CB mechanism . In which first carboanion is formed and loss of…

Q: Exercise 2N₂O5(soln) → 4NO₂(soln) + O₂(g) Time (s) 0 200 400 600 800 1000 1200 1400 1600 1800 2000…

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Q: The normal freezing point of acetic acid is -2.3 oC, and the Kf is 3.90. If 58.9 g of MgCl2 is…

A: Given, Mass of MgCl2 = 58.9 g Mass of Acetic acid solvent = 2.1 kg For acetic acid, Kf = 3.90 °C/m…

Q: Calculate the theoretical yield of trityl ethyl ether (g) if 0.42 g trityl bromide is reacted with…

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Q: A 0.605 gm sample of Sodium Carbonate and Sodium bicarbonate , the solution titrated with 0.106N HCI…

A: According to the question we have, The mass of the sample is given by = 0.605 gm The sample contains…

Q: -23 An aluminum atom has a mass of 4.48 x 10 g and a small airplane has a mass of 5000. kg. Use this…

A: Given: The mass of one Al atom = 4.48×10-23 We have to find the number of moles of aluminum atoms in…

Q: A sample containing 1.65 moles of an unknown gas occupies a constant volume of 15.0 L at 300 K. When…

A: As the energy is applied at constant volume , so we would use molar heat capacity at constant volume…

Q: A 7.00 L tank at 23.7 °C is filled with 13.2 g of carbon dioxide gas and 3.50 g of sulfur…

A: Given, mass of Carbon dioxide (CO2) = 13.2 g mass of sulfur tetrafluoride (SF4) = 3.50 g Mole…

Q: Br снасна AICI, HNO3 H₂SO₂

A: Solution: We know aromatic compound (benzene containing) are shows electrophilic substitution…

Q: The chemical formula for hydrogen bromide is HBr. A chemist measured the amount of hydrogen bromide…

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: 3. How many grams are in 3.45 X 10-4 formula units of FeO? 4. How many moles are in 69.3 g of…

A: 1 mole = 6.022×1023 (Avogadro's number ) The mass of one mole of formula units of an ionic substance…

Q: 1. A representation of a developed paper chromatogram of a mixture of dyes is shown here: A B C…

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Q: 6. What is the molecular formula for a compound that is 85.6% carbon and 14.4% hydrogen if the…

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Q: The standard enthalpy change for the following reaction is 415 kJ at 298 K. ZnCl₂(s) →→→→→ Zn(s) +…

A: As we know that the enthalpy of a reaction is the difference of the standard enthalpies of formation…

Q: Write the equilibrium constant expression, K, for the following reaction. Please enter the compounds…

A: Given reaction: HCN(aq) + H2O(l) ⇌ H3O+(aq) + CN-(aq) We have to write the expression of the…

Q: Calculate the number of milliliters of 0.429 M Ba(OH)2 required to precipitate all of the Cr³+ ions…

A: we need to calculate the volume using the given equation

Q: Draw the product of the reaction showing the stereochemistry at any stereogenic centers. ****** H…

A: Given reaction is epoxide ring opening reaction.  Nucleophile attacks on epoxide carbon and epoxide…

Q: Using the table of standard heat of formation values, calculate the standard enthalpy for the…

A: Standard enthalpy of reaction can be calculated using the standard enthalpy of formation of…

Q: Consider the following reaction where Kc = 77.5 at 600 K. CO(g) + Cl₂(g) COCI₂(g) A reaction mixture…

A: A question based on equilibrium concept. Using the given information about the concentration of…

Q: Write the empirical formula for at least four ionic compounds that could be formed from the…

A: Empirical formula of a compound is a simplest formula of the compound

Q: The average person's step covers 2.5 feet. Some health experts recommend getting 10,000 steps a day.…

A: First we need to calculate the distance covered in feet in 10,000 steps using the average step…

Q: The standard enthalpy change for the following reaction is -1.20x10³ kJ at 29 2 Be(s) + O₂(g) →→→→2…

A: When divided thermochemical equation by 2 unit  then we also divide the enthalpy change value by two…

Q: When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution…

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Q: Minor product(s): Ph Ph Ph Ph Ph OEt OEt (racemic) OEt (racemic) F

A: 4th option is minor. As shown below:

Q: A scientist measures the standard enthalpy change for the following reaction to be 36.8 kJ: CO₂(g) +…

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Q: 20. Predict the following product for the following sigma tropic rearrangement: heat

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Q: Modify the molecules so that they show the form that is dominant at physiological pH.

A: The NH2 groups in cadaverine and octopamine remain protonated at physiological pH of 7.4.

Q: 1. a. Write the balanced equations for the half reactions (ionic) and the overall net ionic equation…

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Q: 13.15 Give the splitting pattern expected for the indicated ¹H-NMR signal.

A: 1H NMR is a technique by which structure of organic compounds are determined. Chemically equivalent…

Q: Exercise: calculate the average atomic mass for the naturally occurring Mg elem The isotope…

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Q: 13.16 Give the splitting pattern expected for the indicated ¹H-NMR signal.

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

Q: What are the respective concentrations (M) of Cu+2 and Cl- afforded by dissolving 0.200 mol CuCl2 in…

A: Given :  Number of moles of CuCl2 = 0.200 mol  Volume of solution = 345 mL  To calculate :-…

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.