Question 17 0.5 pts 0.25 mol of solid glucose (C6H120) is dissolved in 100. mL of...
Question 20 0.5 pts The blood serum acetone for a person is determined to be 26.1 mg of acetone per 100 mL of serum. Express this concentration %v/v if the density for acetone liquid is 0.79 mg/mL. Question 21 0.5 pts What is the concentration in w/V% for 7.50 g Na2SO4(s) dissolved in 229 mL of solution, (2 SF)
Calculate the vapor pressure depression of a solution that 218 gram glucose (180.2 g/mol) is dissolved in 460 mL of water (18.01 g/mol). The temperature of the solution is 30°C. Assume the density of solution and water as 1.00 g/mL, the vapor pressure of pure water at 30°C 31.82 mm Hg.
A 5.0067 g sample of Na2CrO4 (MW = 161.97 g/mol) is dissolved in 250.0 mL of water. Assume the solution has a density of 1.00 g/mL. A 50.0 mL aliquot of the solution is then diluted to a final volume of 250.0 mL. What is the concentration of Na+ in the diluted solution in units of parts per million (ppm)?
A 5.9957 g sample of Na, CrO, (MW = 161.97 g/mol) is dissolved in 1000.0 mL of water. Assume the solution has a density of 1.00 g/mL What is the concentration of Na* (MW = 22.9898 g/mol) in the solution in units of molarity (M)? concentration: М What is the concentration of Na+ in the solution in units of parts per thousand (ppt)? concentration: ppt A 50.0 mL aliquot of the solution is then diluted to a final volume of...
5.3307 g of Na2CrO4 (MW 161.97 g/mol) is dissolved in 1000.0 mL of water. Assuming the solution has a density of 1.00 g/mL, what is the concentration of Na (MW 22.9898 g/mol) in the solution in units of a) molarity (M)? Number b) parts per thousand (ppt)? Number ppt c) 25.0 mL of the solution is then diluted to a final volume of 500.0 mL. What is the concentration of Na* in the diluted solution in units of parts per...
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In the following questions write your answers with the detailed steps. Show all necessary equations or conversion factors. a. 4.50 g sample of glucose (C6H120) is dissolved in enough water to make 10.0 mL of solution. Calculate the molarity. b. 424g of solute is dissolved in enough water to give 1.00 L of solution. The density of the resulting solution is 1.18 g/mL. What is the %(w/w)? c. Write a...
46.7 g of caffeine (C3H 10N402, 194g/mol) is dissolved in 847 mL of water (H20, 18.0 g/mol). The density of water is 1.00 g/mL. What is the mole percent of caffeine in the solution? 28.4% 5.51% 0.509% 0.512%
Question 15 1 pts A bottle of cold medicine contains 25% (v/v) ethyl alcohol (ethanol) in water. . In 125 mL of medicine, how much ethyl alcohol is there (in mL)? Ethyl alcohol is C2H60 and has a density of 0.789 g/mL. What is the molarity of the solution? . Question 16 1 pts If you make a solution by using 45 g glucose (C6H12O) and add enough water to make 250.mL of solution: . What is the % (m/v)...
Question 4 Status: Not yet answered | Points possible: 1.00 Glucose (molar mass 180.16 g/mol) is a simple, soluble sugar. Glucose solutions are used to treat patients with low blood sugar. Suppose you prepare a glucose solution using the described procedure. Step 1: Dissolve 294.4 g of glucose in enough water to make 500.0 mL of solution. Step 2: Transfer 18.6 mL of the solution to a new flask and add enough water to make 250.0 mL of dilute solution....
12. Molarity, M, is defined as A. moles of solute dissolved in 1 mol of solvent. B. moles of solute dissolved in 1 kg of solvent. C. moles of solute dissolved in 1 L of solvent. D. moles of solute dissolved in 1 L of solution. E. moles of solute dissolved in the solution. 13. What volume of 2.50 M NaOH (40.00 g/mol) contains 0.100 mole of NaOH? A. 0.250 L D. 0.250 mL B. 40.0 mL E. 0.0400 mL...