12. You can distinguish epinephrine hydrotartrate from norepinephrine hydrotartrate by? A. Water solubility B. Reactions of oxidation with iodine at different pH C. Reactions in general alkaloid precipitation reagents D. Reactions with iron(III) chloride E. Reactions in Fehling's reagent.

Q: solve question Q9) After adding precise amount of HCI to antacid tablet, the contents of the flask…

A: #Q.9: The main constituent in an antacid is sodium bicarbonate, NaHCO3.

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A: At gravimetric analysis, reaction is carried out in presence of heat ,

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A: The correct answer about H1 NMR of fosfomycin is given below

Q: Iodine atoms combine to form molecular iodine in the gas phase I(g) + I(g) → L(g) This reaction…

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Q: What is the missing symbol in this uranium fission reaction? U + dn - A. 1Ba + EKr + 3 in D. I - --…

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Q: B. Which of the following is the most reactive in an El reaction? Br Br Br n o wars labd A. С.

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Q: - Hydrogen gas and oxygen gas release 482.6 kJ of heat when they combine to form steam. Is this…

A: Given :  H2 + O2 ---> H2O  Amount of heat released = 482.6 kJ  To determine :-  Whether the…

Q: In the analysis of 0.8972 g of an impure Cl- sample (35.45 g/mol), 1.399 g of AgCl (143.32 g/mol)…

A: Given, mass of AgCl precipitated = 1.399 g mass of impure Cl-= 0.8972 g

Q: Be sure to answer all parts. The equilibrium constant Kc for the reaction 2NH3(g) = N2(g) + 3H2(g)…

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Q: How many milliliters of 0.100 M NaOH are needed to neutralize 50.00 mL of a 0.150 M solution of…

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Q: Br CI CI

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Q: Given the following data for this reaction below what is the rate law for this reaction.(To make…

A: With the help of given experimental table, Rate for the given reaction = ?

Q: Calculate the equilibrium constant for the following reaction at 298 K. Cu(s) + 2 Ag*(aq) Cu2*(aq) +…

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Q: A student determines the value of the equilibrium constant to be 6.04x10-37 for the following…

A: Given-> Keq = 6.04 × 10-37 Moles of N2 = 2.09 mole

Q: The name given to an aqueous solution of HNO3 is what?

A: Nitric acid (HNO3) is a strong acid because when it is dissolved in an aqueous solution, it…

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Q: What is the pH range the buffer can maintain this buffer system: pyridine and pyridinium bromide?…

A: From Handerson Hesselblach equation  POH= Pkb + log(salt/base)  For Pyridine Kb= 1.8×10-9 POH= -log…

Q: Välues If needed for this question. When 12.0 mL of a 6.47×10-4 M sodium phosphate solution is…

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Q: A 0.5000 g sample containing NaCl (58.44 g/mol), BaCl2 (208.23 g/mol), and 11.56% by mass of…

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Q: Which of the following is the strongest acid?

A: The strongest acid among the following ?  • HCN ( Ka for HCN is 4.9 × 10-10 )  • H3BO3 (Ka for H3BO3…

Q: . What is the composition of 40% alcohol? a. 40 mL alcohol in 60 mL of water. b. 40 mL alcohol in…

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Q: A 1.500 g sample of iron ore, labeled A, was processed accordingly to give 0.5215 g of pure Fe2O3…

A: First of all we have to calculate the moles of Fe2O3. From that only we get the moles of Fe and…

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Q: Why is it that one mole of carbon with one mole of oxygen results to one mole carbon dioxid. with…

A: According to the law of mass of conservation, the mass can neither created nor destroyed. However,…

Q: 2. The active component of aspirin is acetylsalicylic acid, HC,H,0., which has a K. of 3.0 x 10-4…

A: 2) Given: Ka of HC9C7O4 = 2.0 × 10-4  a) Given: Mass of HC9C7O4 = 0.500 g. And volume of solution =…

Q: Explain and write the persons involve and their role/relation in the History of Chemical…

A: Chemical equilibrium is a condition attained when rate of forward reaction is equal to rate of…

Q: 7. For sequential reaction: А —> В + С ..(i) ..(i) 2B » C+ 2D If % yield of (i) and (ii) reactions…

A: As the reaction is sequential so we can find the final yield by multiplying both the yield…

Q: Q6) Given the following set of data concerning standardization of NaOH solution: - mass of KHP…

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Q: Calculate the S for the mixing of 1 mole of nitrogen with 3 moles of oxygen at 298 K and a final…

A: Moles of nitrogen = 1 mole Moles of oxygen = 3 moles Total number of moles, nT = 1+3 = 4 moles

Q: What is the pH of a solution with 0.37 M pyruvic acid and 0.15 M sodium pyruvate? Include 3 sig figs…

A: Given, concentration of pyruvic acid = 0.37 M Concentration of sodium pyruvate = 0.15 M pKa of…

Q: Calculate the pH for each case in the titration of 50.0 mL of 0.100 M HCIO(aq) with 0.100 M KOH(aq).…

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Q: Assume you determine that there are 58.00 g of oxalate and 12.27 g of iron in a 100.0 g sample of…

A: Given , sample compound : KwFex(C2O4)Y(H2O)z mass of oxalate = 58.00 g mass of iron = 12.27 g mass…

Q: Which of the following is the first step in the mechanism of the acid-catalyzed dehydration reaction…

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Q: Provide what is being asked in each of the columns in the given table. Molecule/ Molecular Molecular…

A: According to VSEPR theory, valance shell electrons are combine together to form the molecular…

Q: 1. 250.0 g each of toluene (CoHsCH:) and benzene (CsHs) are mixed together. Answer the following…

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Q: 4. Determine the difference in electronegativity ( JAe.n.|) for each of the following bonds, then…

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Q: A multivitamin sample has a label claim of 500 mg ascorbic acid (176.12 g/mol). According to quality…

A: For initial sample- NaOH required was 25.40mL and 0.1101M. Number of moles of NaOH, n = Molarity *…

Q: 1. in人。 Na OEt Et OH 2. 3.

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Q: What is the molecular formula of Alkane, Alkene and Alkyne if n=4?

A: The Molecular formula of Alkane (n = 4) is C4H10.

Q: Propose a curved arrow mechanism to account for the formation of compound C.

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Q: 1) Given the enthalpy of the following chemical reactions. How much is the change in enthalpy when…

A: Answer: Enthalpy change for a reaction is an extensive property, therefore they can be added or…

Q: What is the pH of a solution with 0.65 M lactic acid and 0.22 M sodium lactate? Include 3 sig figs…

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Q: What volume of hydrogen gas is produced when 8.82 g of sodium reacts completely according to the…

A: Given,  sodium (s) + water(l) -----> sodium hydroxide (aq) + hydrogen(g)  The mass of sodium =…

Q: What is the volume occupied by 2.00 moles of CO2 gas at 35 C and 1.20 atm pressure

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Q: Base: Sodium Acetate pka: 4.76 *pH value for conjugate acid (Acetic Acid) Soln. #1 Weak Base Strong…

A: As per Henderson equation- pH = pKa + log [B-]/[HB] [HB] = Concentration of acid [B-] =…

Q: A 0.5000 g sample containing NaCl (58.44 g/mol), BaCl2 (208.23 g/mol), and 11.56% by mass of…

A: Given:- Mass of sample = 0.500 g Impurities = 11.56% by mass Impurities yield = 0.7364 g of Dried…

Q: 4. In a process called flash electroplating, a current of 2.5 x 10'A passes through an electrolytic…

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Q: Prelaboratory Assignment: Electrochemistry: Galvanic Cells and the Nernst Equation 1. Use the…

A: Given , (a) AuCl4-(aq) +3Fe2+(aq) →Au(s) +4Cl-(aq) +3Fe3+(aq)

Q: In the analysis of 0.8972 g of an impure Cl- sample (35.45 g/mol), 1.399 g of AgCl (143.32 g/mol)…

A: 1) Correct option (b) 0.3460g 2) Correct option (b) 38.57%

Q: 32. A 50.00 mL of 0.0275 M HCl solution was titrated with 0.1500 M NaOH. Calculate the pH of the…

A: