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- Question Calculate the solubility for N-Phenylsuccinimide at 152 to 154 melting point with 1 g?What is the reaction for the 2-methylpropan-1-amine(Isobutylamine) titration with hydrochloric acid? Explain how to solve such tasks. ThanksIf a 0.4340g sample of methenamine were treated in the usual way with 25mL of 0.6500N H2SO4 and 9.45mL of 0.45000 N NaOH was required in the back titration, what would be the percent of Methnemine in the sample?
- What would be the learning objective in an experiment of the determination of the Ksp of a slightly soluble compound?what is the solubility of phenazopyridine hydrochloride in the basic and acidic medium? with illustration, and chemical structure and its melting point .I. Expressions of Concentration 1. Calculate the sodium content, in terms of mEq, of 1 g of ampicillin sodium (C6H18N3NaO4S). 2. A pharmacist dissolves the contents of eight (8) pcs of Clindamycin 250 mg capsules, into a sufficient amount of astringent to prepare 120mL of solution. What is the percentage strength (w/v) of clindamycinin the prescription? 3. How many milliliters of a solute should be used to prepare 1 pint of a 15% (v/v) lotion? 4. What is the molarity of a solution that is prepared by dissolving 10g Potassium chloride in enough water tomake 500mL of solution? 5. Express in percentage the fluoride concentration in drinking water given in 0.6 ppm. i need help:((
- Why a precipitate of manganese dioxide be removed from the potassium permaganate solution before standardization?The carbonate anion is known to be hydrolyzed as shown in the figure. Since Ka1 = 1.45x10-7, Ka2 = 4.7x10-11 and KçBaCO3 = 5.1x10-9, calculate the solubility of BaCO3 salt at pH = 8 and pH = 12 depending on the pH value.Yerleştirme Görüntü Paylaş Pencere Yardım Report Fe spectro 2 %125 Ekle Tablo Grafik Metin Ortamlar Yorum Answer the following questions. 1) The 40 mg/L Fe stock solution was prepared with iron (II) ammonium sulfate hesahystoate [Fe(NH.):(SO.):(H;O)«] rather than with iron (II) chloride [FeCl:). What is the reason of this choice? 2) For convenience, several glass or quartz cells are generally used spectrophotometrie analyses; these cells should be "matched" with regard to their.optical properties. a) Why they should match with each other? b) Suppose one of the cells has a light path that is slightly longer than the usual 1.00 cm. How would this affect the results of an analysis if the defect was not recognized? c) Explain how the "unmatched' cell problem can be solved? 3) Draw the scheme of single bcam spectrophotometer and state the function of each compartment sepcrately.
- Why must solid remain in constant contact with a solution of sparingly soluble salt in order to ensure equilibrium?A RbOH solution is titrated four (4) times against potassium hydrogen phthalate (KHP; FW=204.224) samples to the Phenolphthalein endpoint. Using the data below, determine the concentration of the RbOH solution? g of KHP Volume of Base Required 0.5373 g 42.49 mL 0.5856 g 43.88 mL 0.5790 g 48.56 mL 0.5856 g 44.60 mL (Report your answer as "mean +/- std dev") M What is the percent relative standard deviation? % What is the 99% Confidence Interval for the concentration of the solution (population mean)?Using this info, please calculate two theoretical yields for (1) p-acetamidobenzenesulfonamide and (2) sulfathiazole. Amounts used in experiment: 2-Amino thiazole = 0.3 g 4-acetamidobenzenesulfonyl chloride = 0.75 g Dry Acetonitrile = 1.5 mL Dry K2CO3 = 2 equiv. HCl = 10 mL