Topic: Determination of Calcium by Atomic Absorption Spectroscopy (AAS) Answer this:  1. It is observed that as you increase the concentration of the standard, the intensity of yellow flame also increases. Why?

Q: 13) Consider [MnX6]4, where the ligands, X are especially strong-field ligands and are monodentate.…

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Q: 1. Which two of the compounds below are constitutional isomers? CH3CH₂CH₂OH CH3CH₂OCH₂OH…

A: If the compounds have the same molecular formula but have a different bonding arrangement of atoms…

Q: Identify the type of nuclear decay that occurred in each of the following: (a) Ruthenium-102 was…

A: The symbols of alpha, beta, electron, and positron are respectively.

Q: Use the appropriate standard reduction potentials in the appendix of your book to determine the…

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Q: If cell potential of the cell Mg/ Mg2+ (0.01 M) // HCl(x M)/ H2(g. 1.0 atm) / Pt, 2.09 v at 25 °C,…

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Q: half-reaction 2 H₂O(1)+2e - H₂(g) + 2OH(aq) standard reduction potential Ered=-0.83 V red=+1.065 V…

A: The half cells given ;  1) 2 H2O(l) +2e- →H2(g) + 2OH-(aq)                E°red =-0.83 V2) Br2(l) +…

Q: If hydrogen is used to synthesize hydrocarbons two main pathways are discussed in the scien?fic and…

A: Fischer-Tropsch Process:The Fischer-Tropsch process is a well-known and established method for…

Q: Rank these compounds in terms of acid strength from strongest to weakest. 1 -OH 11 A) I>II> IV > III…

A: The acidity of a compound depends on the stability of the conjugate base formed after a donation of…

Q: 63. In this reaction, which substance behaves as the oxidizing agent? Pb + PbO₂ + 2H₂SO4 → 2PbSO4 +…

A: Oxidising agent: Substance which oxidises other substances but itself get reduced. Oxidising agent:…

Q: 4. In the reaction below, the ketone oxygen is 180, rather than the more common ¹60 isotope. The…

A: The question is based on the concept of organic reactions.we need to correctly explain the formation…

Q: Question 9 of 10 > © Macmillan Learning Rank the organic molecules in order of increasing acidity.…

A: pKa value: pKa value negative logarithm of the acid dissociation constant (Ka). pKa = -logKa Low pKa…

Q: 9-10. Below is the temperature-solubility curve for several salts. 100 90 80 A. 10 grams B. 30 grams…

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Q: How many litres of C6H14(l)C6H14(l), measured at 20 ∘C, must be burned to provide enough heat to…

A: Heat of Combustion is the measure of amount of heat release when 1mole of substance is burned.…

Q: a) 11. NaCl solution (25 mL) was mixed with Ag (22 ml, 0.05 M). Calculate the ppm of CI (CI=35.5…

A: 11) Volume of NaCl solution = 25 mL Molarity of AgNO3 solution =0.05 M Volume of AgNO3 solution= 65…

Q: Calculate the mass, in grams, of a sample that has a volume of (73.60 ± 3.20)mL and a density of…

A: Given: Volume = (73.60 ± 3.20) mL            Density = (12.00 ± 0.02) g/mLTo calculate the mass of…

Q: When plutonium-239 is bombarded with a neutron, it produces zirconium-97, cesium-136, and releases 7…

A: To calculate the mass defect, we need to determine the total mass of the reactants and compare it to…

Q: Calculate the molarity of a solution prepared by dissolving 14.5 g of BaCl_2 in 250 mL of solution.

A: Mass of BaCl2 = 14.5 g Volume of BaCl2 = 250 mL Molar mass of BaCl2 = 208.23 g/mol

Q: 10. If a 50.0-mL sample of 0.250 M NaCN is titrated by 0.250 M HCI (strong acid), what is the pH of…

A: To determine the pH at the equivalence point of the titration between NaCN and HCl, we need to…

Q: What type of reaction is the following? Br₂(g) + Nal(aq) → 2NaBr(aq) + 1₂(g) Combination…

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Q: O: From the following structures, select a reasonable resonance contributing structure for the…

A: Resonance structures are sets of Lewis structures that describe the delocalization of electrons in a…

Q: Chemical species by reducing power

A: The reducing and oxidizing tendency of elements can be determined using…

Q: Fill in the complete set of reagents necessary for each of the following reactions.

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Q: At-14.4 °C the concentration equilibrium constant K, -9.3x10 for a certain reaction. Here are some…

A: If energy is released, reaction exothermicIf energy is absorbed, reaction is endothermicFor…

Q: The mixture consists of 14.50 g ethane and 310.0 g of propane. What is the total vapor pressure at…

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Q: % Transmittance (a.u) 100 80 60 40 20 0 4000 r Pure anhydrous CAF 3500 3000 2500 2000 Wavenumber…

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Q: Draw a diagram showing all possible hydrogen bonding interactions between molecules of H2O and…

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Q: Devise a synthesis of each compound using CH3CH₂CH=CH₂ as the starting material. You may use any…

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Q: make an aqueous solution of 0.137 M magnesium chloride for an experiment in lab, using a 250 mL…

A: we need to use the equation:Molarity (M) = moles of solute / volume of solution (L)Given: Molarity…

Q: An unknown mass of each of the following substances, initially at 21.0 ∘C, absorbs 1920 J of heat.…

A: Q = mc∆T where Q is heat,m is mass of the substance,c is specific heat capacity of the substance and…

Q: 1. Use the photographs in the table "Oxidation States of Manganese" in Step 1 of the virtual…

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Q: 1. Why is oxygen NOT a greenhouse gas?

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

Q: Which one of the following is not a colligative property? Vapor Pressure Depression O Boiling Point…

A: The colligative properties of a solution are dependent on the number of solute particles present,…

Q: What volume of water must be added to concentrated HCl solution to prepare 100 mL 0.955 M HCl…

A: It is a dilution problem. The dilution of any concentrated solution can be done by using water. Here…

Q: Draw all valid and reasonable resonance structures starting from the first structure shown. Circle…

A: Rules for determining the best resonance structures: 1. Neutral structure is more stable than the…

Q: 3. Plutonium (Pu) is an artificial element made by bombarding a uranium-238 nucleus with an alpha…

A: 3.The given incomplete nuclear reaction is .We have to give the complete nuclear reaction.4.The…

Q: Predict whether the following reactions will be exothermic or endothermic. Reaction A. N₂(g) + 3…

A: Exothermic reaction : The reaction which proceeds with release of heat energy , is exothermic…

Q: Question 7 of 7 > Ⓒ Macmillan Learning compound C H3C CI CH3 CH3 H3C compound E compound G CH3…

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

Q: C1: 5: The molecule below is cholesterol. For each of the eight numbered carbons identify whether…

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Q: What is the charge of the complex formed by a platinum (II) metal ion coordinated to two ammonia…

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Q: Use the balanced equation for the reaction forming malachite to answer the following questions.…

A: The balanced chemical equation for the formation of malachite is

Q: The equilibrium constant for the reaction 2 HF (g) H2 (g) + F2 (g) is 0.450 at a particular…

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Q: A hydrogen bond is a special case of which intermolecular force? Provide some examples of functional…

A: H-bond is a kind of intermolecular interaction. It is shown by the functional groups which contains…

Q: What is the theoretical pH of a 0.1 M HCI solution? 02 0 1 O -1 Cannot be determined. O 13

A: pH :  pH is a measurement of the acidity or alkalinity of a solution. It is defined as the negative…

Q: student wishes to make a buffer that has a pH of 4.65.  The student has HNO2 and NaNO2.  Nitrous…

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Q: A chemist encounters an unknown metal. They drop the metal into a graduated cylinder containing…

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Q: The half-life of nickel-63 is 100.1 years. If there are 100 grams of nickel-63 present at a certain…

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Q: Consider a 0.028 L aqueous solution that contains 0.5900 g of caffeine. The solubility of caffeine…

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Q: In TLC, the property used to identity a compound is... O Spotting O Visualization O Retention Factor…

A: TLC is a qualitative technique used in analytical chemistry. The compounds are identified using…

Q: In acetic acid/sodium acetate buffer the solute particles were Na+¹, C₂H3O2, and HC₂H3O2. With which…

A: A buffer is a solution or system that resists changes in pH when small amounts of acid or base are…

Q: r the following reaction, 37.3 grams of sulfuric acid are allowed to react with 42.5 grams of zinc…

A: Zn(OH)2              +              H2SO4→           ZnSO4            +          H2OZinc hydroxide…

Spectroanalytical Methods

Spectroanalytical methods measure the wavelength and intensity of radiations that are either emitted or absorbed by a molecular or atomic species. These methods are useful for evaluating the electronic or atomic arrangement of the molecules of a given analyte.