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

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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i:2.5/4.0/0.25/0.4 ii:6.25/75/25/100/50 iii:25/50/75 iv1:4/0.2/0.75/0.25 iv2:8/10/20/30/40
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A protein solution was prepared by dissolving 0.750 grams in 125 mLs of an aqueous medium. At 4°C an osmotic pressure rise of 2.6 mmHg of solution was observed. The solution had a density of 1.00 g/mL. Determine the molecular weight of the protein.
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The solubility in acetonitrile of molecular compound M is measured and found to be 0.635 at 10. °C. Calculate the volume of a saturated solution of M in mL acetonitrile that would contain 490. mg of M at this temperature. Be sure your answer has the correct unit symbol and 3 significant digits.
Explain the results of this chart using information on diffusion and osmosis through the selectively permeable egg shell membrane.
Solute S has a distribution constant of 4.2 between water (phase 1) and hexane (phase 2). Calculate the concentration of solute S in hexane if [S]water is 0.011 M. [Shexane If the volume of water is 75.0 mL and the volume of hexane is 20.0 mL, find the ratio of the moles of solute S in hexane to the moles of solute S in water. mol Shexane mol Swater
A 1 mL sample of glycogen was calculated to contain 21 µmol (micromole) glucose. To 1 mL of this sample was added 2 mL of 2 M HCl. It was then hydrolysed by boiling the solution for 15 minutes. After boiling the hydrolysate was cooled and made up with H2O to a final volume of exactly 10 mL. The glucose was measured in this solution and found to have a concentration of 340 µg/mL (microgram/milliliter). i) Calculate the mass (mg) of glucose in the 10 mL of hydrolysate. As the 1 mL of glycogen sample was made up to a final volume of 10 mL, this mass of glucose was produced by the hydrolysis of the original 1 mL glycogen sample. ii) Calculate the amount (µmol) of glucose produced by the hydrolysis of the glycogen sample. iii) Calculate the purity of the glycogen used in the sample as % Purity = (moles of measured glucose/ moles of calculated glucose in glycogen) *100 iv) state your answer in a complete sentence. Show your working out such that the marker can easily understand it.…
5) The volume of several aqueous copper sulfate (CuSO4) solutions was precisely measured at SATP. All of the solutions were made by adding copper sulfate to 100.00 g of water. ncopper sulfate (mol) Vsolution (mL) 0 100.18 0.0330 100.16 0.0696 100.36 0.111 100.81 0.156 101.62 First, estimate the concentration-dependent partial molar volume of copper sulfate in water by taking finite differences. Second, fit the data to a hyperbola and take a derivative of the hyperbola to accurately calculate the partial molar volume of copper sulfate in water at each concentration. Interpret the partial molar volume at infinite dilution - what must copper sulfate be doing to the nearby water molecules?
In an organic chemistry lab, some camphor crystals were synthesized but there were some traces of isoborneol also present in the crystals which lowered the melting point of the camphor crystals from 179 °C to 169 °C. Treating it as a solid-solid solution with isoborneol as the solute and camphor as the solvent, find the mass percentages of camphor and isoborneol in the solution. The freezing point depression constant for camphor is 40 °C kg mol1. The molecular weights of camphor and isoborneol are 152.2 g/mol and 154.3 g/mol respectively. O A. 96.14 % and 3.86 % respectively B. 3.80 % and 96.20 % respectively O C. 3.67 % and 96.33 % respectively O D. 96.29 % and 3.71 % respectively O E. 99.75 % and 0.25 % respectively
What is the concentration in molarity of an aqueous solution which contains 1.91% by mass ethylene glycol (MM = 62.07 g/mol)? The density of the solution is 1.04 g/mL. 1 4 7 +/- Tap here or pull up for additional resources 2.19 M 2 3 5 6 8 O XC с x 100
2. When performing the recrystallization of an impure solid, why is it advised to use the minimal amount of solvent possible? Group of answer choices To minimize the amount of pure solid lost due to its solubility. To minimize the cost of the recrystallization. To reduce the time needed to filter the pure solid from the solvent after recrystallization. To minimize the amount of hazardous materials used.