Civen Chromist needs to add 0.381g of N9₂ co3 (106g| mod to a reaction mixture. Find out of a the volume (me) 1.53m Sodium Caribonate solution to be used ? (a) 2.35x10-3 mL (b) 426m2 (c) 0.426 ML 4.01 mL 7.35m2
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- 3What is the ratio strength of benzalkonium chloride in a nasal spray that contains 125 µg/mL of the ingredient? a 1:8 b 1:80 c 1:800 d 1:8000a) What mass of Fe(NH4)2(SO4)2•2H2O(s) is required to prepare a 500 mL solution containing 100 ppm (m:v) in Fe? b) Using this stock solution, what aliquot must be used to prepare calibration solutions, 100 mL volume, of the following concentrations: 0.100 ppm, 0.500 ppm, 2.00 ppm, 4.00 ppm, and 7.00 ppm.The solutbility constant for Ce(IO3)3 is 3.2x10^-10. What is the Ce3+ concentration in a solution prepared by mixing 50 mL of 0.0450 M Ce3+ with 50 mL of: A.) 0.0450 M IO3- ? B.) 0.0500 M IO3- ?
- calculate the molarity of CaSO4 (s) in 0.450 M Na2SO4(aq) at 25°C. the ksp of CaSO4 is 4.93 x 10^-5. give answer in stnadard not scientific notationHow many grams of GaAs04 are required to prepare 2800 mL. of dissolution 0.035 N. ?TOPIC: GRAVIMETRY SHOW THE SOLUTION The mercury in a 0.7152-g sample was precipitated with an excess of paraperiodic acid, H5IO6, according to the following reactions:5 Hg+2 + 2 H5IO6 ---> Hg5(IO6)2(s) + 10 H+The precipitate was filtered, washed free of precipitating agent, dried and found to weigh 0.3408-g. Calculate the percentage of Hg2Cl2 in the sample. Molar Masses: Hg5(IO6)2 = 1448.75 Hg2Cl2 = 472.09 Answer: 38.82% Hg2Cl2 An iron ore was analyzed by dissolving a 1.1324-g sample in concentrated HCl. The resulting solution was diluted with water, and the iron (III) was precipitated as the hydrous oxide Fe2O3·xH20 by the addition of NH3. After filtration and washing, the residue was ignited at a high temperature to give 0.5394 g of pure Fe2O3. Calculate (a) % Fe, and (b) % Fe3O4 in the sampleMolar Masses: Fe2O3 = 159.69 Fe = 55.847 Fe3O4 = 231.54 Answer: 33.32% Fe and 46.04% Fe3O4
- When a Vitamin C (ascorbic acid; MM = 176.12 g mol-1) tablet is crushed, dissolved and titrated with 0.0340 M KIO3(aq) to a purple/blue endpoint (given by a starch indicator), the volume of KIO3 used is 29.80 mL. If 60 mg of ascorbic acid is the recommended dietary allowance (i.e., 100% of the RDA), then what is the % RDA for the Vitamin C in the tablet? KIO3(aq) + 5 KI + 6 H+ → 3 I2(aq) + 3 H2O I2 (aq) + ascorbic acid → 2 I- + dehydroascorbic acidCalculate the weight of pure sodium carbonate that is necessary to prepare 2.806 L of 0.223 N Na2CO3 (105.99 g/mol) from the primary-standard solid. Assume the solution is to be used for titrations in which the reaction is: CO32- + 2H+ ----> H2O + CO2 Express you answers in 3 decimal placesWhat volume of a 0.186 molL−1 Na3PO4 solution is necessary to completely react with 91.9 mL of 0.103 molL−1 CuCl2?v
- If 500mL of 0.10M Ca2+ is mixed with 500mL of 0.10M SO42-, what mass of calcium sulfate will precipitate? Ksp for CaSO4 is 2.40 • 10-5. express answer to 3 significant figures. And include units.A 2.10 g of potassium is completely reacted in excess chlorine gas.The sloid product isthen dissolved in 0.850L of 0.200M solution chloride solution.Calculate the molarity(M) pf chloride ion in the solutionWhat is the normality and molarity of a solution of KMnO4 if 40.00 ml will oxidize 0.3000g of FeSO4.7H2O? Note: Please present complete solution.