Introductory Chemistry (6th Edition)
6th Edition
ISBN: 9780134302386
Author: Nivaldo J. Tro
Publisher: PEARSON
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Chapter 19, Problem 90E
A solution is made by dissolving 28.65 mg of a protein in water and diluting to a total volume of 25.0 mL. The osmotic pressure of the solution is 4.55 torr at 25 °C. What is the molar mass of the protein? (The osmotic pressure of a solution is given by the equation: Osmotic Pressure:
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The osmotic pressure of an aqueous solution of a certain protein was measured to determine the protein’s molar mass. The solution contained 3.50 mg of protein dissolved in sufficient water to form 5.00 mL of solution. The osmotic pressure of the solution at 25 °C was found to be 1.54 torr. Treating the protein as a nonelectrolyte (The Van't Hoff Factor = 1), calculate its molar mass.
R = 0.0821 L•atm• mol-1• K-1
(Note: Don't forget to convert your pressure to atmospheres and temperature to kelvin if you use this version of the gas constant.)
The osmotic pressure of an aqueous solution of a certain protein was measured to determine the protein’s molar mass. Thesolution contained 3.50 mg of protein dissolved in sufficient water to form 5.00 mL of solution. The osmotic pressure of thesolution at 25 °C was found to be 1.54 torr. Treating the protein as a nonelectrolyte, calculate its molar mass.
B-Galactosidase (ß-gal) is a hydrolase enzyme that catalyzes the hydrolysis of ß-galactosides into monosaccharides. A 0,421 g
sample of ß-galactosidase is dissolved in water to make 0.133 L of solution, and the osmotic pressure of the solution at 25 'C' is
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Chapter 19 Solutions
Introductory Chemistry (6th Edition)
Ch. 19 - Prob. 1SAQCh. 19 - Prob. 2SAQCh. 19 - Which compound is an amino acid?Ch. 19 - Q4. The sequence of amino acids in a protein chain...Ch. 19 - Prob. 5SAQCh. 19 - Prob. 6SAQCh. 19 - Prob. 7SAQCh. 19 - Prob. 8SAQCh. 19 - Prob. 9SAQCh. 19 - Q10. How many nucleotides are required to code for...
Ch. 19 - Prob. 1ECh. 19 - Prob. 2ECh. 19 - Prob. 3ECh. 19 - Prob. 4ECh. 19 - Prob. 5ECh. 19 - Prob. 6ECh. 19 - Prob. 7ECh. 19 - Prob. 8ECh. 19 - Prob. 9ECh. 19 - Prob. 10ECh. 19 - Prob. 11ECh. 19 - Prob. 12ECh. 19 - Prob. 13ECh. 19 - Prob. 14ECh. 19 - Prob. 15ECh. 19 - Prob. 16ECh. 19 - What are steroids? What are some of the functions...Ch. 19 - Prob. 18ECh. 19 - What are the main functions of proteins within...Ch. 19 - Prob. 20ECh. 19 - Prob. 21ECh. 19 - Prob. 22ECh. 19 - Prob. 23ECh. 19 - Prob. 24ECh. 19 - Prob. 25ECh. 19 - Prob. 26ECh. 19 - Prob. 27ECh. 19 - Prob. 28ECh. 19 - Prob. 29ECh. 19 - Prob. 30ECh. 19 - Prob. 31ECh. 19 - Prob. 32ECh. 19 - Prob. 33ECh. 19 - Prob. 34ECh. 19 - Prob. 35ECh. 19 - Prob. 36ECh. 19 - What is a gene?Ch. 19 - Prob. 38ECh. 19 - Prob. 39ECh. 19 - Do most cells in the human body contain genes for...Ch. 19 - Prob. 41ECh. 19 - Prob. 42ECh. 19 - Prob. 43ECh. 19 - 44. Describe the process of protein synthesis.
Ch. 19 - Prob. 45ECh. 19 - Prob. 46ECh. 19 - Prob. 47ECh. 19 - Prob. 48ECh. 19 - Prob. 49ECh. 19 - Prob. 50ECh. 19 - Prob. 51ECh. 19 - Prob. 52ECh. 19 - Prob. 53ECh. 19 - 54. Determine whether each molecule is a lipid. If...Ch. 19 - 55. Sketch the block diagram for a triglyceride.
Ch. 19 - 56. Sketch the block diagram for a phospholipid....Ch. 19 - 57. Draw the structure of the triglyceride that...Ch. 19 - Prob. 58ECh. 19 - Prob. 59ECh. 19 - Prob. 60ECh. 19 - Prob. 61ECh. 19 - Prob. 62ECh. 19 - Prob. 63ECh. 19 - Prob. 64ECh. 19 - Prob. 65ECh. 19 - Prob. 66ECh. 19 - Prob. 67ECh. 19 - A particular protein is composed of two individual...Ch. 19 - Prob. 69ECh. 19 - Prob. 70ECh. 19 - Prob. 71ECh. 19 - Prob. 72ECh. 19 - Prob. 73ECh. 19 - Prob. 74ECh. 19 - Prob. 75ECh. 19 - Prob. 76ECh. 19 - Prob. 77ECh. 19 - Prob. 78ECh. 19 - 79. Match each term with its correct meaning.
...Ch. 19 - Prob. 80ECh. 19 - The amino acid glycine has this condensed...Ch. 19 - Prob. 82ECh. 19 - Since amino acids are asymmetrical, a peptide with...Ch. 19 - Prob. 84ECh. 19 - Prob. 85ECh. 19 - Prob. 86ECh. 19 - Prob. 87ECh. 19 - Prob. 88ECh. 19 - Prob. 89ECh. 19 - 90. A solution is made by dissolving 28.65 mg of a...Ch. 19 - Prob. 91ECh. 19 - 92. Sickle-cell anemia is caused by a genetic...Ch. 19 - Prob. 93QGWCh. 19 - Prob. 94QGWCh. 19 - Discuss these questions with the group and record...
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- Starch contains CC, CH, CO, and OH bonds. Hydrocarbons have only CC and CH bonds. Both starch and hydrocarbons can form colloidal dispersions in water. Which dispersion is classified as hydrophobic? Which is hydrophilic? Explain briefly.arrow_forwardThe molar mass of an enzyme was measured by dissolving the 3.221 grams of the enzyme in 1.00 liter of water. The osmotic pressure of the solution was 5.746 cm of solution at 20°C (assume the density of the solution is 1.00 g/mL and the density of mercury is 13.56 g/mL). What is the molar mass of the enzyme?arrow_forwardβ‑Galactosidase (β‑gal) is a hydrolase enzyme that catalyzes the hydrolysis of β‑galactosides into monosaccharides. A 0.490g sample of β‑galactosidase is dissolved in water to make 0.145 L of solution, and the osmotic pressure of the solution at 25 ∘C is found to be 0.719 mbar. Calculate the molecular mass of β‑galactosidase?arrow_forward
- *00 B-Galactosidase (B-gal) is a hydrolase enzyme that catalyzes the hydrolysis of B-galactosides into monosaccharides. A 0.607 g sample of B-galactosidase is dissolved in water to make 0.171 L of solution, and the osmotic pressure of the solution at 25 °C is found to be 0.756 mbar. Calculate the molecular mass of B-galactosidase. molecular mass: Question Source: McQuarrie, Rock, And Gallogly 4e - General Chemsitry Publisher: University Science Books Show all 10:02 PM 10/17/2021 F12 PrtScr Insert Delete F7 F5 F4 & Backspace 23 $4 P. Enter Shift V B N M Alt Ctrl End ugatarrow_forwardAn 80 kg subject consumed a snack that contained 50 g of carbohydrate. Before eating the snack the subject’s blood glucose was 5.5 mM. Calculate the concentration of glucose (mM) that would be reached in the blood after consuming the snack.Assume that all the carbohydrate in the snack was converted to glucose, rapidly absorbed and distributed throughout the extracellular water (ECW) within 30 minutes. Assume ECW is approximately 20% of body weight and the glucose is not metabolised further.arrow_forwardThe osmotic pressure of a solution containing 5.87 mg of an unknown protein per 10.0 mL of solution is 2.45 torr at 25 °C. Find the molar mass of the unknown protein.arrow_forward
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