Calculate the difference in energy (in joules) between a photon with λ= 687 nm and a photon with λ= 393 nm. Enter your answer in scientific notation.

Q: Only part c and d please

A: Part c) Is zinc more reactive, or less reactive than iron? Explain your choice. Part d) A…

Q: CH₂OH 0000 HỌC−H H =0 H-C-OH HO–C−H H-C-OH H-C-OH H-C-OH H-C-OH CH₂OH CH₂OH Select each term that…

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Q: For the cell shown, the measured cell potential, Ecell, is -0.3509 V at 25 °C. Pt(s) | H₂(g. 0.773…

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Q: The combustion of propane is described by the chemical equation C3H8 (g) + 5O2(g) → 3CO₂(g) +…

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Q: IUPAC Rules Give the IUPAC name for the following compound:

A: In this question we have to tell the IUPAC name of the compound.

Q: Balance the following redox equation: ____Al(s) + ____Pb2+(aq) → ____Al3+(aq) + ____Pb(s) b. Label…

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Q: Lactic acid, HC3H5O3, is a waste product that accumulates in muscles tissue during exercise, leading…

A: Lactic acid is a weak acid and hydrolysis of weak acid follow Oswald dilution law  The formula of…

Q: Give the mechanism ? OH 1. NaBH4, Meol 2 H₂O

A: Given : We have to make final product for the given reaction.

Q: Crymotripsin is an enzyme that degrade polypeptides The turnover number (k₂) is measured to be k₂=…

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Q: Painly What product forms at the cathode during the electrolysis of molten KBr ? K+ (1) Br-(1)…

A: Electrolysis  Process in which electric energy converted into chemical energy Cathode undergoes…

Q: Calculate the average binding energy per nucleon for Manganese, 55 25 Mn (atomic mass = 54.938047 u)

A: Nucleus is composed of protons and neutrons. Nucleons are known as either on of the particle from…

Q: Draw the major product of this reaction. Ignore inorganic byproducts. 1. LIAIH4 2. Neutralizing…

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Q: Two moles of an oxygen gas (O2) are put in a container with a volume of 0.0025m3. If the temperature…

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Q: Devise a synthesis for the following transformation. SM = starting material. TM = target molecule Br…

A: Here we have to synthesize the following target material from the given starting material from…

Q: the equilibrium constant for the reaction of hydrogen gas and ethene to produce ethane under certain…

A: K is the ratio of  product of concentration of products raised to their stoichiometric coefficient…

Q: Of the following substances, only __________ has London dispersion forces as the only intermolecular…

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Q: b) For two of the carboxylic acids, do an ARIO analysis to explain their relative acidities.…

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Q: opose the structures of the intermediate compounds and the reagents needed to complete the lowing…

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Q: Methane is formed in landfills by the action of certain bacteria on buried organic matter. If a…

A: Given :-  Pressure = 754 torr Volume = 200. mL Temperature = 28.5°C  To calculate :-  Mass of…

Q: Consider the reaction N₂(g) + 20₂(g) 2NO₂(g) Use the standard thermodynamic data in the tables…

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Q: Given the following information, calculate the reaction velocity at saturating substrate…

A: Michaelis-Menten constant, KM = K-1 + K2K1 = 20 + 300010 = 302 sec-1 Maximum reaction velocity, Vmax…

Q: 1. Name these compounds: a) CH3CH2 а сн он H Br CH3CH₂ CH₂EOK Br b) c) d) CH₂EX Br CH₂C Br CH3CH₂…

A: The organic compounds given are

Q: Argon has normal boiling and freezing points of 87.3 K and 83.8 K, respectively. The triple point of…

A: All the necessary calculations have been done in the following step.

Q: Draw the products from the following transformations. Your file should have your name clearly…

A: Given are organic synthesis reactions

Q: An experiment was conducted to determine the over-all order of the reaction: YOI → MIYA At the start…

A: Given: Run Initial concentration [YOI]o M Final concentration [YOI]o M Time (seconds) 1 5.142…

Q: QUESTION 32 Determine the equilibrium constant (Keq) at 25°C for the reaction Cl2(g) + 2Br (aq) =2C1…

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Q: (Q70) Using the tabulated values from the text (located in Appendix G, beginning at p. 1211)…

A: In the given question we have to calculate the standard gibs free energy (∆G°rxn) of the reaction.…

Q: Compared to hydrogen , 1/1H, the element Helium , 4/2 Has : A - more mass and is larger in size B-…

A: Compared to 11H , the element helium 2He4 has :

Q: Show all the mechanistic steps in the following assignment. 1) Roll two die to determine the number…

A: In this question we will take a primary bromoalkane and react with Mg/dry ether followed by CO2 to…

Q: Based on your knowledge of carbon's atomic structure, which of the following orbital diagrams below…

A: Carbon atom contains four electron in its valence shell. So it can form a maximum of four bonds…

Q: This is an impossible formula. If it were real, determine the molar mass of:

A: To find Molecular mass for a hypothetical compound.

Q: RESONANCE THEORY 1. Explain why and when there is a need for using resonance theory ?

A: Resonance is the ability of system to move its pi electrons in the system. 2. The delocalized…

Q: The following plot shows the pH curves for the titrations of various acids by 0.10 M NaOH (all of…

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Q: 1.50 mol of calcium chlorite is dissolved in enough water to produce 4.50 L of solution. K₂2.9 x…

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Q: The airbags that protect people in car crashes are inflated by the extremely rapid decomposition of…

A: Given-> Volume of N2(g) = 87.0 L T = 12.0°C = 12.0 + 273 = 285 K P = 1 atm

Q: The allowable concentration of arsenic in drinking water is 0.05 mg of arsenic per liter of water.…

A: The formula to find concentration of solution = Weight of solute in grams/weight of solution in…

Q: Which of the following molecules have a molecular dipole moment? CC14 CBr₂Cl2 CO₂ CHCI 3 T || IV O…

A: Which of the following molecules have a moleculer dipole moment ?

Q: Write the products for the following Wittig reactions: H (1) PPh₂ or me H (2) Ph₂P MeO

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Q: Calculate the mass % of a solution of KCl prepared by dissolving 12.75 g KCl in 54 g H2O?

A: Given :  Mass of water = 54 g  Mass of KCl = 12.75 g  To calculate :  mass % of  solution

Q: Iodine (131 I)  is used in diagnostic and therapeutic techniques in the treatment of thyroid…

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Q: In the first order reaction A → products, concentration of A = 0.33 M initially and 0.085 M after 12…

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Q: With a high value of N/Z, an isotope will tend to decay through Positron Alpha Electron capture Beta

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Q: 06. Calculate the standard change in enthalpy (AH°) for each re- action and tell whether the…

A: (a)-> N2(g) + 3H2(g) -----> 2NH3(g) (b)->Ca(OH)2(s) -----> CaO(s) + H2O(g) ->Answer…

Q: fountains, an explorer notes that the water for tea is boiling vigc table below to estimate the…

A: High in the mountains, an explorer notes that the water for tea is boiling vigorously at a…

Q: Which of the following ions is aromatic? 1 11 IV 11 O AU OIV M

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Q: 5.7 mL of 0.1 mol/L HCI solution was added to 10 mL of buffer solution at pH 4.0. Calculate the…

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Q: When the Cu2+ concentration is 1.04 M, the observed cell potential at 298K for an electrochemical…

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Q: (Q68) Using the tabulated values from the text (located in Appendix G, beginning at p. 1211)…

A: We are authorised to solve only one question at a time. Please post rest of the questions…

Q: Draw the reactivity series for nucleophilic substitution at the carbonyl carbon. (You may exclude…

A: Reactivity series for nucleophilic substitution at the carbonyl carbon?

Q: Draw the structure(s) of the major organic product(s) of the following reaction. Br H₂PO₂ • You do…

A: In this question we have to tell the major organic product of the 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.