1 4 7 +/- Calculate the frequency in hertz of electromagnetic radiation that has a wavelength of 630.0 nm. (c = 3.00 X 10³ m/s) 2 5 8 Question 14 of 26 . S™1 3 6 9 O Submit Tap here or pull up for additional resources XU x 100

Q: The H⁺ concentration in an aqueous solution at 25 °C is 6.1 × 10⁻⁴. What is [OH⁻]?

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Q: Balance the chemical equation below using the smallest possible whole number stoichiometric…

A: Given, the unbalanced equation: Ca3(PO4)2 (s) + SiO2(s) + C(s) → CaSiO3(s)+ P4(s) + CO(g) We have to…

Q: Q4. How much caffeine in milligrams (mg) is found in 300 mL 0.5 M solution?

A: Here, we have to find the mass of caffeine in milligrams that are found in 300 mL 0.5 M caffeine…

Q: Can cadmium (II),  and mercury (II) be separated quantitatively by precipitation as sulfides from a…

A: The solution to be separated has [Cd(NO3)2] = [Cd2+(aq)] = 0.15 M [Hg(NO3)2] = [Hg2+(aq)] = 0.10 M…

Q: When a red light with a wavelength of 670 nm shines on a piece of metal, an electron is ejected.…

A: Given -> Wavelength= 670 nm

Q: A molecule with the molecular formula of C3H8O produces the IR spectrum shown below. Draw a…

A: Here we are required to find the structure that fits the ir spectra

Q: Explain why free radical polymerisations are normally carried out either under nitrogen or under…

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Q: Equation for precipitation reaction of Ba(NO3)2(aq)+CuSO4(aq)

A: Ba(NO3)2 (barium nitrate) dissociates in the form of Ba2+ and NO32-. In the same way CuSO4 (copper…

Q: C. Br H₂C-CH₂ I The name of compound C is: O Search CH3 CH3

A: The naming of an organic compound can be done with help of rules of international union of pure and…

Q: In the above redox reaction, use oxidation numbers to identify the element oxidized, the element…

A: ClO4–  + zn + H2O → ClO3– + Zn(OH)2 In the above reaction we have to find out The elements which is…

Q: IR Spectrum بل 4000 3000 1712 2000 1600 y (cm¹) 1277 1254 1200 800

A: The main use of infrared spectroscopy is the determination of functional groups of molecules…

Q: MISSED THIS? Watch KCV Mixtun of Gases and Parhet Pressure (WE Total Pressure and Bartal Pressures…

A: Given, Volume of flask = 295 mL

Q: Having a hard time understand why Oxirene is categorized as antiaromatic. It says 4 pi electrons,…

A: Aromatic compounds are the compounds that have (4n+2) pi electrons and antiaromatic compounds are…

Q: Clearly show a calculation of the molarity of NaOH. Use your data, and include units.

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Q: How many atoms of a 1.0-mole sample of bismuth-214 will remain after 20 minutes?

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Q: Write the mass-balance and charge balance equations for saturated Ag2C204 and saturated PbCl2₂.

A: We know in a balanced chemical equation there is conservation of mass, conservation of charge and…

Q: In order to make 0.500 L of a 0.131 M solution, you will need to weigh out how many grams of sucrose…

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Q: A molecule with the molecular formula of C3H8O produces the IR spectrum shown below. Draw a…

A: In general for ethers, the C-H stretching vibration absorption bands are found in the 2800 to 3000…

Q: Complete the balanced neutralization equation for the reaction below. Be sure to include the proper…

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Q: Show intermediates and explain your answers. Fe- SO4 + 2 Meli

A: The intermediates and the final structure is given below,

Q: An unlabeled salt found in the laboratory was believed to be either LiCl, NaCl, or KCl. Titration of…

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Q: A student measures the 2- CO3²- concentration in a saturated aqueous solution of magnesium carbonate…

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Q: etermine [H3O+] and [OH] concentrations (in M to two decimal places) for each: (a) Pure water at 10…

A: pH of a solution is defined as negative logarithmic of concentration of hydrogen ions

Q: 7. A gas system has initial volume and temperature of 8160mL and 467.0K. If the temperature changes…

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Q: what is the change in entropy when150 ml of cold (278 k) water is added to 150 ml of nearly…

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Q: Which of these drugs will produce a basic solution when dissolved in water? (Select all that apply)…

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Q: In the reaction: PbS+ 30₂ → 2 SO₂ + 2 PbO Which element is oxidized? Which element is reduced? 11 --…

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Q: Please help with with e & f

A: A question based on phase diagram. An unknown substance whose phase diagram is prescribed that has…

Q: D 121HHLH ← → https://www-awu.aleks.com/alekscgi/x/Isl.exe/10_u-IgNslkr7j8P3jH-IBMBkpcnaFu0F7UJ....…

A: Atoms are made up of subatomic particles called electrons, protons and neutrons. Protons are…

Q: What is the pH of a 0.017 M HNO3 solution? Your Answer: Answer

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Q: Write a mechanism for the step shown below, using curved arrows to show electron redistribution.…

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Q: Consider the process: N₂H4(9) N₂H4 (1) Use the Table of Thermodynamic Properties to determine AS and…

A: Given reaction: N2H4 (l) →N2H4 (g)T = 25°C ∆Ssys =? J/K∆Hsys =? kJ∆Ssurr=? J/K∆Suniv=? J/K

Q: Which of these would be suitable to treat with Mg to make a Grignard reagent? A Br none of them OC…

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Q: 15 A gas is released at point Q in the apparatus shown. point Q damp Universal -Indicator paper…

A: rate of diffusion ∝ 1/ molar mass The lower the molar mass, faster the particle diffuses. H2 has…

Q: Multiply or divide the following measurements. Be sure each answer you enter contains g 93. X 32. mL…

A: The significant figure refers to particular digits in a number. According to the measurement rule,…

Q: Draw Newman structures for the structure shown below through the highlighted bond that correspond to…

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Q: If you were to start with 1.00 g of salicylic acid, what volume of acetic anhydride would be needed…

A: Here given mass of salicylic acid = 1 g        density of acetic anhydride  = 1.082 g/ml We have to…

Q: C2H5OH(l)+3O2(g)=2CO2(g)+3H2O(l) The reaction enthalpy for standard conditions. I got the answer of…

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Q: Part of the second question how are moles used to determine everything?

A: The given problem is based on the mole concept.

Q: What is the pH of a 0.030 M solution of oxalic acid? Ka for oxalic acid is 5.9 x 10-2.

A: pH of weak acid can be calculated by considering its Ka value.

Q: 1) Determine los mg de ADMS necesarios para complejar todo el Pb(II) presente en el torrente…

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Q: Evaluate A Stotal when two blocks of Copper (one has mass 500.0g and the other 375.0g) are held…

A: If one hot copper block and one cold copper block are held together, after some time the system will…

Q: NH,NCO(aq) +(NH2)2CO(aq) the following data were obtained: [NHANCO], M 0.396 minutes 0 0.198 267…

A: #1: Half-life(t1/2) is the time period when the present concentration is exactly half of the initial…

Q: Draw the major monoalkylation product(s) you would expect to obtain from reaction of…

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Q: Is disaccharide “4” a reducing sugar

A: Reducing and nonreducing sugar: Carbohydrates that contain free aldehyde or ketone groups can act as…

Q: Write the Ksp expression for the sparingly soluble compound zinc phosphate, Zn3(PO4)2. (If either…

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Q: Which statement about RNA and DNA is incorrect? O a. The bases adenine, guanine and cytosine are…

A: Following statements will satisfy for DNA and RNA structure:-

Q: draw the tetrahedral intermediate as it is ormed in the following reaction. H₂C. NH₂ HCI/H₂O reflux

A: The given reaction shows the acid-catalyzed hydrolysis of the reactant, amide to form carboxylic…

Q: For a certain chemical reaction, the standard Gibbs free energy of reaction at 30.0 °C is -61.4 kJ.…

A: Given standard Gibbs free energy, ∆Go = - 61.4 kJ  temperature, T = 30.0 + 273.15 = 303.15 K

Q: Do we always have to convert Celsius into kelvin when using Gay-Lussacs law?

A: Answer:- This question is answered by using simple concept of Gay- Lussac law of gases which states…

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.