Calculate the concentration in mol dm-3 of 10 w/v% sodium hydroxide based on: Add benzamide (3.0g) and 10% sodium hydroxide (50 cmP3P), together with a few anti-bumping granules, to a 100 cmP3P round-bottom flask.
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Calculate the concentration in mol dm-3 of 10 w/v% sodium hydroxide based on:
Add benzamide (3.0g) and 10% sodium hydroxide (50 cmP3P), together with a few anti-bumping granules, to a 100 cmP3P round-bottom flask.
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- 10-27. A 10.231-g sample of window cleaner containing ammonia was diluted with 39.466 g of water. Then 4.373 g of solution were titrated with 14.22 mL of 0.106 3 M HCl to reach a bromocresol green end point. (a) What fraction of the 10.231-g sample of window cleaner is contained in the 4.373 g that were analyzed? (b) How many grams of NH3 (FM 17.031) were in the 4.373-g sample? (c) Find the weight percent of NH3 in the cleaner.The Ksp for LaF3 is 2 x 10-19. What is the solubility of LaF3 inwater in moles per liter?Table 1: Temp vs. solubility data of ammonium chloride. Test tube g NH4Cl/10 mL H2O Crystallization temp. (ºC) 1 1.0 g/10 mL H2O 10 oC 2 1.8 g/10 mL H2O 20 oC 3 2.9 g/10 mL H2O 40 oC 4 3.8 g/10 mL H2O 65 oC 5 4.4 g/10 mL H2O 95 oC Use the table to plot a solubility curve for ammonium chloride on the graph provided below. For the best fit line, use a smooth curve. "Mass of Solute per 100 mL of H2O," should be written on the y-axis (use increments of 2g for every box). "Temperature (°C)" should be written on the x-axis (use increments of 10 °C for every 2 boxes).
- Recall that the test solutions were prepared according to Table KEQ.2. Table KEQ.2:Volumes for the Test Solutions Test Solution 6 7 8 9 10 2.00x10-3 M Fe(NO3)3 5.00 mL 5.00 mL 5.00 mL 5.00 mL 5.00 mL Molar concentration of Fe(NO3)3 stock solution:2.00 × 10¯¹ M Molar concentration of KSCN stock solution:2.00 × 10–³ M 2.00x10-³ M NaSCN 1.00 mL 2.00 mL 3.00 mL 4.00 mL 5.00 mL 0.100 M HNO3 4.00 mL 3.00 mL 2.00 mL 1.00 mL 0.00 mL Use the ICE tables below to calculate the equilibrium concnetrations for each solution. You will use your absorbance reading and best-fit line from the calibration curve to determine the equilibrium concentration of Fe(NCS)2+Sixty mL of an impure acid solution was diluted to 500mL. A 30.00mL portion of this solution was titrated with 25.00mL of 0.1230M NaOH solution. Calculate the % (w/v) HAc in the sample. (FWt HAc = 60) Show all the solutions involved and round-off final answers to two decimal places except for Molarity. (Molar concentrations should be in four decimal places)0.01 mol of solid NaOH was added to a 500 mL solution containing 0.55 M C6H5CH2COOH and 0.75 MC6H5CH2COON (Ka for C6H,CH2COOH = 4.9 x 10-5). Drag and drop the appropriate choices from below to fill the following table and answer the questions. Reaction Table (aq) + OH (ag) + H20 (1) (aq) Initial Changes Final What is the pH of this solution? pH = 8.65 0.02 0.5 0.53 10.32 0.51 0.03 0.73 0.01 0.2 0.75 -0.03 No -0.01 4.47 0.3 +0.01 0.57 +0.03 -0.02 9.85 +0.02 Yes 0.55 C6H5CH2COOH 0.4 0.45 0.1 C6H5CH2CO0- 3.65 3.22 0.77
- Q4- How many grams of sodium hydroxide (M.wt=58.5) can be added to 2.5 liter of a solution mixture of 0.3M ammonia and 0.15M ammonium chloride without changing the pOH by more than 1unit? Kb=1.8× 10-5 ?From a 1000 ppm stock solution of Pb2+, 10 mL are pipetted into a 1000 mL volumetric flask, which is then filled with water. From this new solution, 25 mL are pipetted into a 100 mL flask, which is then filled with water. What is the concentration of the final solution?I Review | Consta The density of toluene (C7 Hs) is 0.867g/mL, and the density of thiophene (C4 H4S) is 1.065 g/mL. A solution is made by dissolving 8.50 g of thiophene in 270 mL of Part A toluene. Calculate the mole fraction of thiophene in the solution. να ΑΣφ mole fraction of C4 H4S =
- 3. To 20,00 ml of 0,1250 mol/l solution of silver nitrate – 25,00 ml of 0,1000 mol/l solution of potassium thiocyanate were added. Calculate pAg of this mixture. pKs(AgSCN) = 11,97 Express numerical result with an accuracy of: Х,ХX1.Determine the mass of sodium chloride required to prepare 400 ml of a Mueller-Hinton broth supplemented with 5.5% (wt/vol) sodium chloride solution. [Mwt NaCl = 58.44 g/mol] 2.Determine the mass of Fe(OH)3 that is required to prepare 350 ml of a 5N Fe(OH)3 solution. [Mwt Fe(OH)3 = 106.867g/mole]grammarly-G X * Content oard.odu.edu/ultra/courses/_393452_1/cl/outline F2 Question Completion Status: X GA student wan X 1 QUESTION 3 A student wants to determine the solubility of water and copper (1) bromide (a green solid) in ethyl acetate (a colorless organic liquid). She places 1 mL of ethyl acetate into each of two test tubes. To one, she adds 5 drops of water to it. To the other, she adds a small scoop of copper(1) bromide. 8.0 F3 2 - Which test tube represents the ethyl acetate and A. Test tube 1 copper(1) bromide if the copper(1) bromide is insoluble in ethyl B. Test tube 2 acetate? C. Test tube 3 D. Test tube 4 - Which test tube represents the mixture of the ethyl acetate and water if the water is insoluble in ethyl acetate? $ Question Com X C Chegg Search x 3 Which test tube represents the mixture of the ethyl acetate and water if the water is soluble in ethyl acetate? - Which test tube represents the ethyl acetate and copper(1) bromide if the copper(1) bromide is soluble…