A sunscreen preparation contains 2.50% by mass benzyl salicyla salicylate/100g sunscreen). If a tube contains 4.00 ounces of su kilograms of benzyl salicylate are needed to manufacture 325 tub (16 oz = 1 lb, 454g = 1lb) %3D
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A: Given Volume of solution = 1500ml Normality = 0.5 N Specific gravity = 1.84 g/ ml % solution = 97
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- Stock iron(II) solution (200Ug mL-1 Fe) ferrous ammonium sulfate hexahydrate mass= 0.1437g, transfer it to a 100 ml beaker. add 15 ml approx of water and 15m1 'approx of dilute sulphuric acid (2M H2SO.). then transfer FeII to 100 ml flask makeup to the mark with water. calculate the moles of ferrous ammonium sulfate hexahydrate solution in unit ug/mL.A solution is prepared by dissolving 155.0 mL of methanol (CH3OH, density = 0.791 g/mL) in 250 mL of water (density 1.00 g/mL) to give a final solution volume of 350.0 mL. Calculate the (a) molarity of the solution, (b) %wt/wt, (c) %wt/vol, (d) %vol/volPrepare 1500mL of 0.5N H2SO4 solution with specific gravity of 1.84g/mL and assay of 97%. Write complete solution using padpaper.
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- Consider a 1.000-L stock solution of 9.69 M Na3PO4. A 2.000-mL aliquot is taken from this stock solution and diluted to a final volume of 1.000 L. A 5.000-mL aliquot is then taken from this new solution and further diluted to make a new solution with a final volume of 750.0 mL. Calculate Na+ in the final solution.A concentrated KOH (MW = 56.105 g/mol) solution is 45.0 %wt KOH and has a density of 1.45 g/mL. How many milliliters of the concentrated KOH solution must be diluted to obtain 100.0 mL of 1.20 M KOH? Thank you:)An aqueous solution of potassium sulfate, K2SO, is made by dissolving 27.6 grams of potassium sulfate in sufficient water in a 300. mL volumetric flask, and then adding enough water to fill the flask to the mark. What is the weight/volume percentage of potassium sulfate in the solution?Weight/volume percentage = %