What is the purpose of NaOH and 3% H2O2 in the separation of aluminum, iron (3+) and chromium ? Why is there a need to remove an excess of H2O2 ? In the dissociation of hydrogen peroxide, what is the manifestation that oxygen gas was liberated? What is the purpose of creating an acidic environment in the treatment with lead acetate in the confirmation of chromium? What is the advantage of the use of alizarin as a confirmatory test for aluminum?

Q: The osmotic pressure of a solution containing 1.15 mg of a sugar (342 g/mole) in 11.0 mL of the solu...

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Q: Methane and water react to form carbon monoxide and hydrogen, like this: CH,(2)+H,O(2) -→ CO(2)+3H,(...

A: The reaction shifts towards the side which has fewer moles or pressure.

Q: The following reaction is monitored as a function of time: AB→A + B. A plot of 1/[AB] versus time yi...

A: Since you have posted questions with multiple sub-parts, we are entitled to answer the first 3 only....

Q: [2] A 20.0 mg sample of a protein is dissolved in water to make 25.0 ml of solution. The osmotic pre...

A: Given: Mass of protein = 20.0 mg = 0.020 g.                                       (Since 1 g = 1000 ...

Q: 0.2 molal aqueous solution of an electrolyte A,B is 90% ionised. The boiling point of the solution a...

A: Molality of solution = 0.2 molal Kb for water = 0.512KKg/mol

Q: c) Determine products A to C from the following reactions, some reaction may produce more than one p...

A: In presence of H2/pt , hydrogenation reaction of double bond, triple bond, carbonyl group is observe...

Q: How many moles of solute particles are present in 1.43 mL of 0.447 M K2SO4?  When you have your ans...

A: Number of solute particles can be calculated from the volume and concentration.

Q: Write an IUPAC name for the following alkane/cycloalkane: Name:

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Q: Give the functions of the following ingredients, then name a branded/commercial skin or hair care pr...

A: 1.Tetrasodium EDTA is used in skin care products because EDTA is a chelating agent and it can decrea...

Q: If the K of a monoprotic weak acid is 1.8 x 10-6, what is the pH of a 0.35 M solution of this acid?

A: Given: Ka of weak monoprotic acid (Assuming HA) = 1.8 × 10-6  And the concentration of HA = 0.35 M  

Q: Properly (i.e., systematically) name the following 1. PAS3

A: The name of a compound can be done by the IUPAC rule. According to which, in an inorganic compound, ...

Q: Aluminium (III) reacts with the Chelating agent HL to give a complex AlL3 that is readily soluble in...

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Q: when you pour one cup of tap water into a transparent bottle, and add one small drop of food colorin...

A: Given: You pour one cup of tap water into a transparent bottle and add one small drop of food colour...

Q: The oxidation of Fe 2+ to Fe 3+ can be induced by hydrogen peroxide in an acid medium. Write the hal...

A: Given that, a balanced redox reaction is  2Fe2+ + H2O2 + 2H+ → 2Fe3+ + 2H2O. We have to write down t...

Q: 1. CH,CH,CI, AICI, 2. Cl, FeCl, D. AIC3 E. NH2 AICH

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Q: topic: matter does each sample have a measurable mass? how do you measure the mass of each sample? ...

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Q: Complete the Kw expression for the autoionization of water. Kw 1.00 x 10-14 =

A: Please find your solution below : Autoionisation of water is a reaction in which water forms hydroni...

Q: 1. Fill out the following table for part A Buffer B: Polyprotic Buffer A: PART A: Preparation of a B...

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Q: Which of the following accurately describes Raoult's Law? O The vapor pressure of such a solution is...

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Q: How would you carry out the following synthesis? ÇCH3 SO3H

A: We have to synthesis p-sulphonicacetophenone from benzene. Since both sulphonic and aceto group both...

Q: The alloy brass contains lead as an impurity in the form of lead sulphate (PbSO,). By dissolving bra...

A: Since you have asked multiple questions, we will answer only first question for you. In order to get...

Q: Identify the structural effect/s present on the given molecule:

A: The functional group of a molecule is a key component and is responsible for providing notable chemi...

Q: one lone electron

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Q: [5] Initial rate data at 25 °C are listed for the reaction: NH4"(aq) + NO2¯(aq)→N2(g) + 2H;O(1) Expe...

A: The solution is as follows:  

Q: (a) The quantum number n describes the. * an atomic orbital and the quantum number e describes its o...

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Q: Draw the structural formula of an alkyne or an alkene or the product of the following reactions: 1. ...

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Q: What are the distinguishing features of gas and vapor poisoning compared with other types of poisoni...

A: A question based on catalysis that is to be accomplished.

Q: Calculate the percent ionization of a 0.20 M formic acid solution. K = 1.7 ×104 (Set up an equilibri...

A: Below attached file showing the details answer. All the best.

Q: Carboxylic acids are known to exhibit a higher C=O stretch frequency in the gas phase than in the co...

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Q: Draw the major product(s) of the following reaction. KMNO4 H20

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Q: Balance the following Equation :  Fe3O4 (s) + CO (g)           =          Fe (s) + CO2 (g)

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Q: Ethane

A: We have to propose a synthesis from ethane to butan-2-one. The required synthesis is shown below  

Q: (a) Choose the correct statement about density: O unit of density is g/L O compares the mass of an o...

A: The correct statement about density is given below

Q: Is the compound aromatic, nonaromatic, or antiaromatic?

A: Aromatic compounds are those which obey Huckel's rule. Huckel's rule predicts whether a planar molec...

Q: Using data from Table 5.3, and that AH , ZnS = -201.1 kJ/mol and AH¡ , ZnCl2 = -415.1 kJ/mol, find t...

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Q: The rate constant k for a certain reaction is measured at two different temperatures: temperature k ...

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Q: What is the value of the rate constant and what are the units for the rate constant? k = x 10-3 O L'...

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Q: Rank the following alkenes in order of decreasing values of Amax- structure A structure B structure ...

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Q: assign a structure to each of the following three spectra. The structures are presented here.

A: From these three spectra, it is clear that there is present one peak for the ester carbonyl group in...

Q: Which of the following decomposition reactions, would yield the highest pressure inside the vessel?

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Q: Some N2 gas is mixed with some O2 gas, and The picture shows a representative sample of the mixture....

A: Given : We have to calculate the mole fraction and partial pressure .

Q: Select the reagents you would use to synthesize the compound below from benzene. Use the minimum num...

A: The organic compound given is 

Q: 1H NMR 2(CHa) CH2 PPM

A: Spectral Analysis - We observe two peaks in the above 1 H NMR spectrum 1) one due to the CH2 hydroge...

Q: Several mechanisms have been proposed for the reaction... H202 + 21 + 2H+ → I2 + 2H20 Which of the f...

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Q: According to the balanced reaction below, calculate the quantity of moles of NHs gas that form when ...

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Q: The following elementary steps have been proposed to explain the gas-phase decomposition o itrous ox...

A: Given : We have to tell the rate law for the given reactions.

Q: Prevacid is used to treat gastroesophageal reflux disease (GERD). The chemical formula of Prevacid i...

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Q: 4. Which compound is considered as the conjugate acid? A. C2H5NH2 C. C2H5NH+3 В. НаО D. OH- 5. Which...

A: 4) the compound which is considered as the conjugate acid is 

Q: uld result for each pair and indicate I for Ensoluble, or S for soluble, or SS for slightly soluble....

A: For Table 1a Here SS= sparingly soluble            I= insoluble            S= soluble 

Q: Propose a mechanism for the biosynthesis of terpene 13 from geranyl pyrophosphate 12. HO HO HO 12 14...

A: Monoterpenes are synthesized in the  plastids of plant cells from geranyl pyrophosphate (GPP) which ...