Explain why yellow or yellow-red solutions have a peak absorbance of 540nm (in the green range on the scale to the right)?

Q: If I combined 15.0 grams of calcium hydroxide with 75.0 mL of 0.500M HCl, how many grams of calcium ...

A:

Q: What are the IUPAC Name and Molecular formula of the structure?

A: 1. Select the principle carbon chain 2. Numbering 3. Naming (prefix + word root + suffix)

Q: The H* concentration in an aqueous solution at 25 °C is 1.5 x 10°. What is [OH]?

A:

Q: For the following halt-reactions AIF, (ag) + 3e→ Al(s) + 6F¯ (ag) e' =-2.07 V Al* (aq) + 3e¯ → AI(a)...

A: The equilibrium constant can be calculated as

Q: The compound As2I4 is synthesized by reaction of arsenic metal with arsenic triiodide. If a solid cu...

A: We have to predict the mass of As2I4 that can be prepared and the mass that is actually isolated.  

Q: 13. Provide a mechanism for the chain radical mechanism, using curved arrow formalism, of the reacti...

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Q: 6 Convert ethanol into a polyethylene glycol chain (better known as PEG. You can google the structur...

A: The functional group is a key component associated with a molecule that furnishes the notable chemic...

Q: Current Attempt in Progress The reaction of sucrose with water in an acidic solution is C12H22011 H2...

A: The concentration after 6 hours can be calculated as

Q: Answer the following questions about Rare Earth Elements:     a. List the Lanthanide and Actinide el...

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Q: concentration:

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Q: Why is the least stable carbanion the bottom middle carbanion? Why wouldn't it be the left secondary...

A:

Q: Consider the diprotic acid H2A with K1  =1.00 x 10^-4 and K2 = 1.00 x 10^-8. Find the pH and concent...

A: K1 = 1 × 10-4  K2 = 1 × 10-8

Q: What is the volume (in liters) of a 0.72 Molar solution made from 0.52 moles of potassium bromide? R...

A:

Q: moles

A: Since you have asked multiple questions, we will solve the first question for you. If you want any s...

Q: Label the diagram according to the components and processes of an alkaline battery. Drag the appropr...

A: In the electrochemical cell, the chemical energy is converted into electrical energy. The addition o...

Q: A 50.0 mL sample of 0.350 M HBr is titrated with 0.200 M KOH. At what volume (in mL) of titrant adde...

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Q: 1

A: Mass of CaCO3 = 0.4676 gram Molar Mass of CaCO3 = 100 g/mol Moles of CaCO3 = 0.4676/100 = 0.004676 m...

Q: 18. Provide the major product or products in the boxes below. Be clear about the stereo- and regioch...

A: General organic reactions:

Q: 2,2-dimethyl-1-propanol

A:

Q: Calculate Kp for cadmium sulfide from the following data: CdS(s) + 2e¯ → Cd(s) + S²- (ag) e° = -1.18...

A: The reactions given are,  

Q: If there is no toxicology unit in the crime laboratory, the respective works will be conducted in th...

A: Forensic toxicology is associated with the medicolegal aspects of toxicology and it plays an essenti...

Q: 1. Which of the following aqueous solutions does have the LOWEST freezing point? (a) 0.20 m HCI (str...

A: Colligative properties: The colligative properties are those properties of solutions that depend on ...

Q: 9. The four compounds listed below undergo SN1 reactions at increasingly faster rates. For each comp...

A: SN1 is a nucleophilic substitution reaction. In this reaction formation of intermediate (carbocation...

Q: Intermolecular Force Intramolecular Force Strength Determination of Properties |Nature of Forces

A: There are two main types of forces present in compound: Intermoleular and Intramolecular

Q: Suppose you have an 8-hour ozone value of 0.088 ppm, and a PM2.5 value of 35.7 ug/m3. The AQI value ...

A: AQI stands for Air Quality Index which serves as a means to measure the extent of Air Pollution.

Q: 2. When we use the stopped-flow method to determine the rate constant, which result is more accurate...

A: Stopped flow method is a rapid kinetics technique to determine rate constant.

Q: COBr2 is formed when CO reacts with Br2. Given the reaction CO(g) + Br2(g)  COBr2(g) , If [CO]0 = .5...

A: Given data : [CO]o = 0.50 M [Br2]0 = 0.40 M Kc = 23

Q: 5.2 Explain how each, the Lowry-Bronsted and the Lewis definition of an acid and base can be used to...

A: General rule - The stronger an acid the weaker must be its conjugate base and vice versa For eg-  Th...

Q: Question 4 What is the concentration of Cd-" in a solution of Cd(OH)2 (Ksp= = 2.5 x 10-) with a pH o...

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Q: Please answer all parts of this question. 1. Magnesium oxide can be made by heating magnesium metal...

A: Reaction:-  Mg(s) + O2(g) ----> MgO(s)   

Q: For the reaction below the partial pressure of NO₂ is 0.31 atm and the partial pressure of N₂O₄ is 1...

A:   Q is the reaction quotient , it is Reaction stage at other than equilibrium stage  Kp is the react...

Q: Select all of the major goals of this experiment. U Perform a strong acid-strong base titration and ...

A: In a pH titration , we titrate acid and base and monitor the pH . 

Q: Glasses are usually harder than plastics

A: This is a multipart question. According to guidelines in multiparts question, we can solve only thre...

Q: what is the number of possible monochlorination products of 2-methylpentane? and among those what is...

A:

Q: Sodium hydroxide reacts with iron (III) chloride according to the following unbalanced chemical equa...

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Q: Part A In order to determine the rate of photosynthesis (the conversion by plants of carbon dioxide ...

A: Ideal gas equation: The temperature, pressure, volume, and mole of the gas are related to the ideal ...

Q: The neutralization reaction between hydrochloric acid and calcium hydroxide produces calcium chlorid...

A: Solution-

Q: Chorles Law K ocauies a uolunme Of sOomL. Fluorine gas Ot 305 K To what temperakre Shauld it be lowe...

A:

Q: Learning Goal: To assign oxidation states to elements in monoatomic ions, polyatomic ions, and neutr...

A: Oxidation number is the amount of charge which would arise when all the bond attached to an atom is ...

Q: A student is making a solution of sugar in water. If the student uses 0.67 moles of sugar and enough...

A:

Q: 4) Which of the following reagents would be ideal (low cost, environmentally safe) to produce 1? A) ...

A:

Q: In the reaction of Cl2 with ethane and UV light, which of the following reactions would be a propaga...

A: Free radical of alkane involve three step reaction. In first step formation of chlorine free radical...

Q: The equilibrium constant with respect to concentration (Kc) for the reaction between nitrogen monoxi...

A:

Q: A 1.480 g sample of oxalic acid, H2C204, is placed in a 100.0-mL volumetric flask, which is then fil...

A: Given : Mass of oxalic acid = 1.480g

Q: it is positive for translucent test,

A: In this question we have to explain what happened when the known sample was tested with different ty...

Q: B. Dilution of Stock Solution

A: The diluted solution was prepared by adding water to stock solution.

Q: Enter your answer in the provided box. Determine the resulting nitrate ion concentration when 80.0 m...

A:

Q: What volume of a 0.500 M HCI solution is needed to neutralize each of the following: (a) 20.0 mL of ...

A: We will first write balanced chemical equations for both and then find volume of HCl needed.

Q: 1.What are the factors to consider when choosing an emulsifier?

A: As per the rules only the first question can be answered

Q: Refer to the figure below. Identify the part of vernier caliper. ... O 10 20 30 40 50 60 70 B0 99 10...

A: Identify the part indicated in the above figures---

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.