Why was yellow most absorbed at 420nm on my spectrophotometer in the lab but is at 600nm on the visible light wavelength

Q: mine the pH of a 0.52 M lithium nitrite solution. (Ka for nitrous acid = 4.5 x 10-4 7.00 12.18 8.53…

A: Given, the Ka for nitrous acid = 4.5×10-4 We have to calculate the pH of 0.52 M lithium nitrite…

Q: ball & stick + labels se cis/trans terms for cyclic structures. Do not specify stereochemistry in…

A: The IUPAC name of the given structure is

Q: Counting by weighing" is used in other applications besides chemistry. A hardware store, for…

A: We are Given that :-  Hardware sells nails in package of 500. Office supply store sells 100 paper…

Q: A 10.00 g charcoal brick from a barbeque measures a C-14 decay rate of 5050 disintegrations per gram…

A: 1 gram of C-14 sample has a disintegration rate of 921 disintegrations per hour initially. Initial…

Q: The values shown below represent hydroxide concentrations that were measured in different solutions.…

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Q: An empty steel container is filled with 0.860 atm of A and 0.860 atm of B. The system is allowed to…

A: Given, A(g) + B(g) ⇌ C(g) Initially Partial pressure of A = 0.860 atm Partial pressure of B = 0.860…

Q: Exercise 41. Draw the structures of the products formed by the following reactions. Reaction…

A: Note : Electrophilic substitution reactions takes place at third position in pyridine ( see below).

Q: What is the general form of the rate law for the reaction given below? N₂(g) + 2O₂(g) → 2 NO₂(g) O…

A: For the given reaction,  N2(g) + 2 O2(g) → 2 NO2(g)

Q: Name the following chemical compounds: Criteria: I can write names and formulas for ionic compounds,…

A: To write the names , we need to check name of cation and anion .  If compound have d-block metal…

Q: O OH 4-hydroxyhexan-3-one O1-ethyl-2-hydroxybutan-1-one O1-ethyl-1-hydroxybutan-2-one…

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Q: PLEASE DRAW THE FULL MECHANISM FOR THE FOLLOWING BROMINATION REACTION FOR A THUMBS UP!! 'N Br3 -I…

A: Note : Pyridinium tribromide is source of bromine. N-acetyl aniline reacts with bromine produces…

Q: Which of the following aqueous solutions will freeze at the lowest temperature? 0.15 m NaBr 0.40 m…

A: Greater the vont  hoff factor Greater will be the change  in colligative Properties.

Q: Which of the following statement(s) is(are) true? Select all that apply: When two atoms are bonded…

A: IR spectroscopy uses infrared radiation from electromagnetic radiation and is used in the structure…

Q: Reversible reactions Directions: Open the link…

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Q: Which of the following is a strong acid? O acetic acid hydrochloric acid hydrofluoric acid phoenha…

A: ★ Answer :  Correct option is Hydrochloric acid is a strong acid.    ** Acids which ionised…

Q: Aldol Condensation A 1.(CH3)2CuLi 2. H₂O/H* C 1. CH3MgBr 2. H₂O/ H* B

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Q: What is the lewis structure for the hydrosulfide ion?

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Q: Practice Exercise For the reaction N₂(g) + 3H₂(g) — 2NH3(g) Kp is 4.3 X 104 at 375°C. Calculate K,…

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Q: Draw the complete acid base reaction of acetic acid with sodium hydride. Use proper arrows to show…

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Q: What is the solubility of PbF₂ in a solution that contains 0.0700 M F⁻ ions? (Ksp of PbF₂ is 3.60 ×…

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Q: Propose a Synthesis for the molecule below. You may use any starting materials containing 6 carbons…

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Q: Lycopene is an important bioactive antioxidant found in tomatoes and other red fruits and…

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Q: lewis structure

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Q: How many isomers (structural, geometric, and stereo) have the formula C5H10, and have "cyclo" in…

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Q: Pls helo ASAP. Pls help in all asked questions.

A: In a synthesis reaction, two or more reactants combine to form a single new product. In a…

Q: ? 1. HƠN 2, H2O / Hz / Pd on BaSO4 H- III CHO -ОН -ОН -ОН CH2OH + CHO HO+H H-OH -ОН CH2OH I I

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Q: Identify the correct list of functional groups found in the Ciprofloxacin analog (antibiotic) shown…

A: Ciprofloxacin analog an antibiotic whose structure can be represented as

Q: Which of the following is a strong acid? O acetic acid Ohydrochloric acid Ohydrofluoric acid O…

A: More stable the conjugate base of an acid, more stronger is the acid. Strong acid has a lower pKa…

Q: In flask A, 5.0 grams of methane is dissolved in a 1.0-kg benzene. In flask B, 5.0 grams of methane…

A: Given: In flask A, 5.0 g of methane is dissolved in a 1.0 kg benzene. In flask B, 5.0 g of methane…

Q: 2 Kinases act on which of the following? please select all that apply

A: Kinase is an enzyme and its main function is to add phosphate group (PO43-) to different molecules.…

Q: Н- Н- НО- H -ОН -OH Н- -H НО- НО- CH2OH I H H -OH -ОН -H -H CH₂OH || Н- HO НО CH2OH -ОН -Н -H CH₂OH…

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Q: 25.0 g of sodium hydroxide is dissolved in 150.0 g of water. What is the % (mass/mass) concentration…

A: Given :-  Mass of sodium hydroxide = 25.0 g  Mass of water = 150.0 g  To calculate :-  %(mass/mass)…

Q: NaOH(aq) + HCl(aq) → H₂0 (1) + AgNO3(aq) + KCl(aq) → AgCl(s) + ¹y. Reaction

A: According to the Law of conservation of mass " all atoms of different elements must be equal on both…

Q: the shape of the model

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Q: SEATWORK: Calculate the hydroxide ion concentration of a 0.0750r NH₂ solution. The Kb is 1.75 x…

A: Given data,Molarity of NH3=0.075 MKb of NH3=1.75×10-5

Q: Fill in the blanks below with a maximum of two words in each space to complete the following…

A: According to Bronsted- Lowry Acid ,acid is substance that donates H+ ion or proton  to form it's…

Q: over Short Answer 2. 3. Rank the following molecules from most acidic (1) to least acidic (4) (ень…

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Q: Each chemical bond in the products must be weaker than each chemical bond in the reactants. The work…

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Q: For the titration curve below, select one option from the list below for each of these three…

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Q: B₂H6(diborane) → 2BH3(borane) Plot this data to determine if the reaction follows first order…

A: Rate constant of first order reaction can be calculated from the equation K= (-1/t)ln {[A]/[A0]} On…

Q: How many isomers (structural, geometric, and stereo) have the formula C5H10, and have "cyclo" in…

A: Degree of unsaturation :  DOU =  2C + 2 - H/ 2    Molecular formula with C5H10   DOU = 2x5+2 - 10…

Q: A) 24 B) 20 25 D) 28 E) 21 ice ele SO, and then draw the corresponding Lewis structure (by following…

A: The number of valence electrons in SO3 is

Q: G H I S. Br 2. CO2 3. Acidify ? COOH DCC + EtzNH Alternatively: React acid with SOC12 then add amine…

A: We have to give the products of the given reactions.   N.B.: According to the company guidelines we…

Q: ОН HO НО. о О ОН

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Q: What is the relationship between pressure and temperature? as pressure decreases, temperature…

A: We would use the following diagram and check the relation between temperature and pressure.

Q: When a particular gas expands against a constant external pressure of 1.00 bar, it does 5 J of work…

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Q: Correct Answer Consider the species N₂, N₂, and N₂. Which of these species will be paramagnetic?…

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Q: 11 Iron for welding railway lines together is produced from the reaction of Po with aluminium. How…

A: 11.  Given : Fe2O3 + 2Al → 2Fe + Al2O3  Mass of Al = 1.00 kg  To calculate :-  Mass of Fe2O3 (in…

Q: Explain how the equation 4Fe(OH)₂(s) + O₂(g) →→2Fe₂O3(s) + 4H₂O(/) in the article illustrates the…

A: Write oxidation state of Fe ion in the reactant---

Q: HZ is a weak acid. An aqueous solution of HZ is prepared by dissolving 0.020 mol of HZ in 22)…

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