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A: See product in red box.
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A: Note : Heck coupling followed by methyl deprotection. ( see below).
Q: How to determine ΔHo for the attached reaction.
A: The enthalpy for the reaction is calculated as shown below.
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- One gram of sodium hydroxide (NaOH) is used to adjust the pH of an aqueous solution (200 gallons) thatcontains 10 lbs of finely ground rhodochrosite (MnCO3) ore. Does the NaOH raise or lower the solutionpH? What is the amount of NaOH added in lbs/ton? What is the molarity (mol/l) of the system? Assumingthe NaOH is completely soluble and the system is at room temperature, what is the solid-to-liquid ratio(wt%) of the system?The concentration of Cl– in a 300.0-mL sample of water drawn from a fresh water acquifer suffering from encroachment of sea water, was determined by titrating with 0.0516 M Hg(NO3)2. The sample was acidified and titrated to the diphenylcarbazone end point, requiring 6.18 mL of the titrant. Report the concentration of Cl–in parts per millionCalculate the average daily intake of chlorobenzene. The concentration is 4.09E-8 mg/m^3, assume that the chemical is through inhalation by workers who work on site for a year. Assume they work 8 hours per day, work 5 days/week, and 48 weeks per year. Using the intake equation of, I = (C*CR*EF*ED)/(BW*AT).
- 2) Given silver oxalate (Ag2C2O4 KSP = 5.40 x10-12) and silver phosphate (Ag3PO4 KSP = 8.89 x10-17) whichsubstance has a greater concentration of the Ag+ ion?The pKa of Cl3CCO2H is 0.64. What is the pH of a 0.580 M solution? What percentage of the Cl3CCO2H is dissociated? pH = ? = ? %Ascorbic acid (Vitamin C, MW = 176.126g/mol) is a reducing agent, reacting as follows: C6H8O6 → C6H6O6 + 2H+ + 2e It can be determined by oxidation with a standard solution of I2. A 200.0-mL sample of a citrus fruit drink is acidified, and 10.00mL of 0.0500 M I2 is added. After the reaction is complete the excess I2 is titrated with 38.62 mL of 0.0120 M Na2S2O3 . Calculate the number of milligrams of ascorbic acid per milliliter of fruit drink. I2 +2e → 2I- I2 + 2Na2S2O3 → 2NaI + Na2S4O6
- Can you please explain 7? thank youWhat are the respective concentrations (M) of Cu+2 and Cl- afforded by dissolving 0.200mol CuCl2 in water and diluting to 345 mL?A) 0.200 and 0.200 B) 0.580 and 1.16 C) 0.200 and 0.400 D) 1.16 and 2.32E) 0.580 and 0.290A piece of an unknown weighing 12.50is placed in 49.7cm of water in a cylinder. The water level increases to 69.0cm3. whats the calculated value for the drnsity of the solid in g ml-1
- 30mL 0.9% v/v green food coloring. Transfer 2mL of of food coloring to flask, QS the flask to 100mL with DI water. What is the concentration of the standard?The commercial production of nitric acid involves thefollowing chemical reactions:4 NH31g2 + 5 O21g2¡4 NO1g2 + 6 H2O1g22 NO1g2 + O21g2¡2 NO21g23 NO21g2 + H2O1l2¡2 HNO31aq2 + NO1g2 (a) Predict what kind of reaction dopamine is most likely toundergo in water: redox, acid-base, precipitation, or metathesis?Explain your reasoning. (b) Patients with Parkinson’sdisease suffer from a shortage of dopamine and may need totake it to reduce symptoms. An IV (intravenous fluid) bag isfilled with a solution that contains 400.0 mg dopamine per250.0 mL of solution. What is the concentration of dopaminein the IV bag in units of molarity? (c) Experiments withrats show that if rats are dosed with 3.0 mg/kg of cocaine(that is, 3.0 mg cocaine per kg of animal mass), the concentrationof dopamine in their brains increases by 0.75 mM after60 seconds. Calculate how many molecules of dopaminewould be produced in a rat (average brain volume 5.00 mm3)after 60 seconds of a 3.0 mg/kg dose of cocaine.1) For an open system with PCO2=10−3.5 atm what fraction of the total carbonate is in the form of CO32− at pH 10.63? 2) Using paleolimnological methods it is possible to estimate past pH values of surface waters. If the estimate of pH is 5.787 , what is the corresponding PCO2? in atm.