A biochemist carefully measures the molarity of glycerol in 84.0 mL of photobacterium cell growth medium to be 38.2 uM. Unfortunately, a careless graduate student forgets to cover the container of growth medium and a substantial amount of the solvent evaporates. The volume of the cell growth medium falls to 9.21 mL. Calculate the new molarity of glycerol in the photobacterium cell growth medium. Round each of your answers to 3 significant digits. db OAM Submit Assignment Continue © 2021 McGraw Hill LLC. AlI Rights Reserved. Terms of Use Privacy Center Accessibility MacBook Air 44 DII DD 20 F10 FB F6 F2 F3 F4 F1 & @ 23 %24 7 9. * CO ( CO

A biochemist carefully measures the molarity of glycerol in 84.0 mL of photobacterium cell growth medium to be 38.2 uM. Unfortunately, a careless graduate student forgets to cover the container of growth medium and a substantial amount of the solvent evaporates. The volume of the cell growth medium falls to 9.21 mL. Calculate the new molarity of glycerol in the photobacterium cell growth medium. Round each of your answers to 3 significant digits. db OAM Submit Assignment Continue © 2021 McGraw Hill LLC. AlI Rights Reserved. Terms of Use Privacy Center Accessibility MacBook Air 44 DII DD 20 F10 FB F6 F2 F3 F4 F1 & @ 23 %24 7 9. * CO ( CO

Chemistry: Principles and Reactions

8th Edition

ISBN:9781305079373

Author:William L. Masterton, Cecile N. Hurley

Publisher:William L. Masterton, Cecile N. Hurley

Chapter1: Matter And Measurements

Section: Chapter Questions

Problem 53QAP: Magnesium sulfate (MgSO4) has a solubility of 38.9 g/ 100 g H2O at 30C. A solution is prepared by...

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Magnesium sulfate (MgSO4) has a solubility of 38.9 g/ 100 g H2O at 30C. A solution is prepared by adding 9.50 g of MgSO4 to 25.0 g of water at 40C. A homogeneous mixture is obtained. Is the solution saturated, unsaturated, or supersaturated? One gram of magnesium sulfate is added to the solution cooled to 30C. Would you expect some of the MgSO4 to precipitate? If so, how much? If not, how much more MgSO4 can be added before precipitation takes place?
87. What volume of 0.151 N NaOH is required to neutralize 24.2 mL of 0.125 N H2SO4? What volume of 0.151 N NaOH is required to neutralize 24.2 n1L of 0.125 M H2SO4?
Identify and explain the mistakes made in the following laboratory protocols: A 10.00 mM solution of glucose (FW 180.16 g/mole) was prepared by first adding 180.16 mg of glucose to a 100 mL empty volumetric flask, and then DI H2O was added to the volumetric flask until the meniscus reached the 100 mL volume mark. The flask was capped and the solution vigorously mixed until the glucose completely dissolved.
In the laboratory you dissolve 13.4g of lead (II) acetate in a volumetric flask and add water to a total volume of 250mL. What is the molarity of the solution? What is the concentration of the lead cation? What is the concentratiion of the acetate anion?
The fish canning industry has a waste effluent with the specification as follows: BOD5 = 150 mg/L, COD = 230 mg/L, CaCO3 = 65 mg/L, pH = 7,0, Odor = 11 (TON, where every 1 mg/L ammonia-N equals to 2 TON), Oil = 300 mg/L. Give recommendation of what kind of treatment (physical and chemical steps) is required to treat the wastewater, and why do you select those steps.
A:If 100 mL of a 0.15 M Mg(NO3)2(aq) solution has a density of 1.09 g/mL, which of the following statements is false? Group of answer choices The mass of Mg(NO3)2 in this solution can be determined from this information. If the solution density was not given, it is usually reasonable to assume 1.00 g/mL The mass of the water in this solution is 109 g It is possible to determine the mole fraction of water in this solution. B: In the body, cell membranes act like semipermeable membranes discussed in class. If a red blood cell is surrounded by fluid with a higher electrolyte concentration than what is inside the cell, which of the following statements is true? Group of answer choices The cell will shrink because water will pass from the inside of the cell to the fluid The surrounding fluid has a lower osmotic pressure than what is inside the cell The cell will swell up because water will pass from the fluid to the inside of the cell Nothing will happen to the…
If a solution is made by adding 8g of (NH4)2SO4 to a 100 ml volumteric flask and enough water is added to bring the total volume to 100ml, what would the density of the solution be? This is a straightforward question but I just wanted some clarification. When we bring the total volume to 100ml, does that mean we added 100ml of water? Will the mass of the water be 100 g regardless of the amount of solute added?
Calculate the normality of 12.5 g of potassium permanganate (KMnO4) in 475 mL solution
Five standard solutions of HBr are prepared by serial dilution in which, at each stage, 10.00 mL are diluted to 120.00 mL. Given that the concentration of the most dilute solution is 3.52 × 10−6 M, determine the concentration of the original HBr stock solution.
1.An aqueous solution of manganese (II) iodide,MnI2,is made by dissolving 21.1 grams of manganese(II) iodide in sufficient water in a 250.mL volumetric flask, and then adding enough water to fill the flask to the mark.What is the weight/volume percentage of manganese (II) iodide in the solution? weight/volume percentage = 2. An aqueous solution of iron (II) chloride,FeCl2,is made by dissolving 31.4 grams of iron (II) chlyin sufficient water in a 500. mL volumetric flask,and then adding enough water to fill the flask to the mark.What is the weight/volume percentage of iron (II) chloride in the solution? weight/volume percentage =_____%
An aqueous solution of sodium hydroxide, NaOH , is made by dissolving 15.6 grams of sodium hydroxide in sufficient water in a 500. mL volumetric flask, and then adding enough water to fill the flask to the mark. What is the weight/volume percentage of sodium hydroxide in the solution? Weight/volume percentage = %
Five standard solutions of HBr are prepared by serial dilution in which, at each stage, 10.00 mL are diluted to 130.00 mL. Given that the concentration of the most dilute solution is 3.42 ×10−6 M, determine the concentration of the original HBr stock solution.