Give a clear explanation handwritten answer  ..

Q: Write out the short form electron configuration for selenium.

A: Atomic number of selenium is 34 which means selenium has total 34 electrons

Q: Jemele dissolves 0.200 mol of a fluoro-carboxylic acid in enough water to make 0.500 L of solution.…

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Q: Water at the surface of a small pond in Toronto is at the freezing point as the sun sets on a winter…

A: Heat released for phase transition from liquid to solid  = mass × heat of freezing

Q: Consider hydrogen atoms Ha, Hp, He, and Ha. Which is the correct order of acidity for the labeled…

A: Concept:  Acidic nature of organic compound: In general, we can find the strength of an acid in an…

Q: A 1.00 liter solution contains 0.35 M nitrous acid and 0.45 M potassium nitrite. IF 0.110 moles of…

A: As per the rules only first three subparts can be answered

Q: Explain how you could synthesize butane. Be sure to list all reactants and reagents required. 2.…

A: The answer is given below

Q: Pls help ASAP

A: We have find out the type of reactions.

Q: nat volume of pure O2 (g) C125

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Q: What is the practical importance of distillation in relation to pharmaceutical and medicinal organic…

A: In the modern organic chemistry laboratory, distillation is a powerful tool, both for the…

Q: 7. Which of the following compounds will elute LAST in a reverse phase chromatography? A. ONF

A: In reverse phase chromatography, the stationary phase is non-polar and mobile phase is polar.

Q: Identify the solubility class and give the best solvent that can differentiate the pairs of…

A: A pair of compounds can be separated from each other depending upon their relative polarity on the…

Q: The ff. terms match the definition, EXCEPT: O Standardization titration of known amount of analyte…

A: Standardization is the process by which the exact concentration of a solution is determined by…

Q: The pKb for the propanoate ion, CH3CH2CO3 , is 9.126. What is the value of Ka (NOT the pKa) for…

A: Given-> pKb of CH3CH2COO- = 9.126

Q: Students were tasked to conduct a recrystallization experiment to test the ability of the three…

A: Filtrate is the solution which gets passed through the filter while precipitate is the solid…

Q: NMez OH (a) H,PO4. (b) (a) HNO, H,SO, (c) (d) NAOH, (d) (1) (e) SOC, HNME2 HO H,O, heat () H2. Pd/C…

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Q: By mixing formic acid and sodium formate a buffer solution was prepared in a way that the [Formic…

A: Henderson's equation: pH = pKa + log [salt]/[acid]

Q: 1. What are the possible I and m values for n=4?

A: According to quantum mechanics, there are four types of quantum numbers. The electrons are filled in…

Q: A)o on to Shows B) A poo D) E)

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Q: Pls help ASAP. Pls name all four I BEG

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Q: The half life for the radioactive decay of carbon-14 to nitrogen-14 is 5.73 x 10° years. Suppose…

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Q: concentration of malonic acid is 0.021M what is the ionic strength of malonic acid?

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Q: Determine the pH of a 0.92 mol L–1 NaF solution at 25 °C. The Ka of HF is 3.5 × 10–5.     11.44…

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Q: A certain metal, M, forms two oxides, M2O and MO. If the percent by mass of M in M2O is 73.4%, what…

A: The answer is given below

Q: Agl (silver iodide, Ksp " 8.51 x 1017, is a low solubility/insoluble salt. Ag(CN)2 has a formation…

A: a) Reaction of AgNO3 and NaI is as follows: AgNO3 + NaI →AgI + NaNO3 As per the reaction 1 mole…

Q: Give an examples of a redox reaction.

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Q: Show the correct equation of Gas law,the variables and what is held constant for the law

A: Gas law relates the pressure, volume and temperature of a gas with each other.

Q: 2. What are the n, I, and possible m, values for the 2p and 5f sublevels?

A: The sunshell is represented by values of n (principle quantum number) and l (azimuthal quantum…

Q: If 0.275 mol of an ideal gas has a volume of 1921 mL and a pressure of 5.50 atm, what is its…

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Q: Identify the atoms that contain a formal charge of -1. O Both oxygens O The chlorine O The nitrogen…

A: identify the atoms that contain a formal charge of -1 ?

Q: When acid is added to a color indicator, it changes from purple to pure blue at a pH = 5.75. When…

A: Concept:  Acid-base indicators: They are chemicals used to determine whether an aqueous solution is…

Q: If a sample of a certain solution is determined to have a [H3O+] concentration of 8.94×10^−4…

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Q: The UV-visible electronic absorbance spectrum of the following azo dye has an absorption maximum at…

A: To find expected λmax value for above dye:  Base value for homoannular diene= 253 nm 6 double bond…

Q: Question 9 of 23 Submit Determine the equilibrium constant for a reaction at 200 K if AG° =28.6…

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Q: What is the pH of 39.74 mL of a 0.1888 M solution of a weak monobasic base (B:, Kb = 9.56 x 10-6)…

A: pH = 11.13

Q: Determine the molar heat of combustion for C2 H5 OH) C2 H5 OH) + 3 O2(g) – 2 CO2(g) + 3 H2O((g)…

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Q: Pls help ASAP. Pls do all 4 i beg

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Q: The following voltaic cell has a cell potential of 1.24 V at 25 °C, and a standard cell potential of…

A: To Calculate Concentration of cadmium ion , we would first write a balanced redox reaction . Then we…

Q: Methyl red (Ka = 6.3 x 10-6) is a common acid-base indicator. Its un-ionized form is red and its…

A: PKa =- log Ka  Where Ka = dissociation constant

Q: Would conditions of +ΔH and -ΔS favor a spontaneous or non-spontaneous reaction? Why? a.…

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Q: 25. From the appropriate absolute entropies and heats of formation calculate the standard free…

A: Change in enthalpy (H) = Enthalpy of product - Enthalpy of reactant Change in entropy (S) = Entropy…

Q: Which of the following best describes the D- galactose sugar presented below? Cuál de los siguientes…

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Q: 10. Calculate the pH at equivalence point and find the indicators for the following titrations: a 25…

A: Equivalence point : In the titration , a point is reached where amount of titrant added is just…

Q: A galvanic cell at a temperature of 25.0 °C is powered by the following redox reaction: 2+ 2+ Sn…

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Q: e temperature a

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Q: CaCl2(aq) + 2 AgNO3(aq) ⟶Ca(NO3)2 + 2 AgCl   Fill in the blanks with either an (s) or an (aq) to…

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Q: For the reaction carried out in this lab, if you started with 2.668 g of the dimethyl ester (MM =…

A: Given data,Mass of dimethyl ester=2.668 gMolar mass of dimethyl ester=188.22 g/molDensity of…

Q: O Use the polygon rule to draw the MO energy diagram of the cyclononatetraenyl anion. Assuming…

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Q: An inventor proposes using a SHE (standard hydrogen electrode) in a new battery for smartphones that…

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Q: What is the final pH of a solution obtained by mixing 450 ml of 0.20 M NaOH with 150 ml of 0.10 M…

A: H3PO4 is a tri-protic acid ( it have 3 acidic Protons ) , so when NaOH is added to it, protons would…

Q: What is the product (s) of the following Reaction? H2 Rh (PPH3),CI B E A O D&E O C&E O A&B O C&D O…

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UV Visible Spectroscopy

Spectroscopy refers to the absorption or emission of light or other radiations by matter. When a substance or chemical absorbs light or radiation, they reach an excited state followed by de-excitation or emission of the light or radiation forming distinct spectra. UV-visible spectroscopy or  ultraviolet-visible refers to the absorption and emission in the ultraviolet and visible regions of the electromagnetic spectrum.