Calculate the concentration of solute in each of the following solutions

# Calculate the concentration of solute in each of the

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1-1)Calculate the concentration of solute in each of the following solutions, express concentration in Molarity (M): a.Sodium chloride solution prepared by dissolves 25 g of Sodium Chloride NaCl in 250 mL distilled water. b.Sodium Persulfate Na d. 1-2)Blank solution for metals analysis on ICP-OES is normally 2% Nitric acid (HNO3) solution, how to prepare 1 liter of the blank solution from concentrated bottle of Nitric acid if the following information appear on the concentrated bottle. 69% (w/w), d=1.408 g/cm 1-3)Diesel range organic (DRO) test in environmental laboratories done using Gas Chromatography (GC), standard prepared from commercial diesel liquid available from any fuel station, describe how to prepare 100 mL of 5,000 ppm (mg/L) solution from diesel using n-hexane as solvent. 1-4)What is the normality of the following: a.0.12 M H2SO4 b.2.35 M H3PO4 d.1.789 g of Sodium carbonate (Na2CO3) in 500 mL solution 1-5)How many grams of MgF2are needed to prepare 250 mL of 1.50 M MgF21-6)37.5 g of NaOH is dissolved in enough water to create 500. mL of solution. What is the molarity of the solution. 1-7)Express the following solution concentrations in % (w/v)
All Copyrights reserved to Chemiasoft ©2004 – 2011, Page 36 of 61 Chapter 1: Introduction a.5 N of NaOH solution b.2000 ppm of NaCl c.3 M of Na2CO31-8)The density of concentrated ammonia, which is 28.0 % w/w NH3, is 0.899 g/mL. What volume of this reagent should be diluted to 1,000 mL to make a solution that is 0.036 M in NH3? 1-9)How many grams of perchloric acid, HClO4, are contained in 37.6 g of 70.5 wt % aqueous perchloric acid? How many grams of water are in the same solution? 1-10)The concentration of sugar (glucose, C6H12O6) in human blood ranges from about 80 mg/100 mL before meals up to 120 mg/100 mL after eating. Find the molarity of glucose in blood before and after eating. 1-11)An aqueous solution of antifreeze contains 6.067 M ethylene glycol (HOCH2CH2OH, FM 62.07) and has a density of 1.046 g/mL. a.Find the mass of 1.000 L of this solution and the number of grams of ethylene glycol per liter. b.Find the molality of ethylene glycol in this solution. 1-12)How many grams of boric acid (B(OH)3, FM 61.83) should be used to make 2.00 L of 0.05 M solution? What kind of flask is used to prepare this solution? 1-13)Describe how you would prepare approximately 2 L of 0.050 0 m boric acid, B(OH)3. 1-14)What is the maximum volume of 0.25 M sodium hypochlorite solution (NaOCl, laundry bleach) that can be prepared by dilution of 1.00 L of 0.80 M NaOCl? 1-15)How many grams of 50 wt % NaOH (FM 40.00) should be diluted to 1.00 L to make 0.10 M NaOH? (Answer with 2 digits.) 1-16)A bottle of concentrated aqueous sulfuric acid, labeled 98.0 wt % H2SO4, has a concentration of 18.0 M. a.How many milliliters of reagent should be diluted to 1.000 L to give 1.00 M H2SO4? b.Calculate the density of 98.0 wt % H2SO4.