Scelta multipla
The osmotic pressure of a solution containing 7.0 g of insulin per liter is 23 torr at 25ºC. What is the molar mass of insulin? (1 atm = 760 torr)
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Indice
- 1. Matter and Measurements4h 42m
- What is Chemistry?8m
- The Scientific Method10m
- Classification of Matter16m
- States of Matter8m
- Physical & Chemical Changes19m
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- Dimensional Analysis22m
- Density12m
- Specific Gravity9m
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- Density of Non-Geometric Objects9m
- 2. Atoms and the Periodic Table5h 41m
- The Atom (Simplified)9m
- Subatomic Particles (Simplified)12m
- Isotopes20m
- Ions (Simplified)25m
- Atomic Mass (Simplified)18m
- Atomic Mass (Conceptual)15m
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- Lewis Dot Symbols (Simplified)7m
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- 3. Ionic Compounds2h 27m
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- 6. Chemical Reactions & Quantities2h 34m
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- Solutions6m
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- Henderson-Hasselbalch Equation16m
- Strong Acid Strong Base Titrations (Simplified)13m
- 11. Nuclear Chemistry1h 3m
- BONUS: Lab Techniques and Procedures1h 38m
- BONUS: Mathematical Operations and Functions47m
- 12. Introduction to Organic Chemistry1h 34m
- 13. Alkenes, Alkynes, and Aromatic Compounds2h 30m
- Spatial Orientation of Bonds3m
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- Hydrohalogenation Reaction7m
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- Naming Benzene19m
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- Benzene Reaction: Nitration6m
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- 14. Compounds with Oxygen or Sulfur1h 22m
- 15. Aldehydes and Ketones1h 1m
- 16. Carboxylic Acids and Their Derivatives1h 11m
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- 18. Amino Acids and Proteins2h 2m
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- 20. Carbohydrates1h 46m
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- Cyclic Hemiacetals8m
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- Mutarotation4m
- Reduction of Monosaccharides10m
- Oxidation of Monosaccharides7m
- Glycosidic Linkage14m
- Disaccharides7m
- Polysaccharides8m
- 21. The Generation of Biochemical Energy2h 9m
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- 23. Lipids2h 26m
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- Fatty Acids25m
- Physical Properties of Fatty Acids6m
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- Triacylglycerol Reactions: Hydrogenation8m
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- Steroids15m
- Cell Membranes7m
- Membrane Transport10m
- 24. Lipid Metabolism1h 45m
- 25. Protein and Amino Acid Metabolism1h 37m
- 26. Nucleic Acids and Protein Synthesis2h 54m
- Intro to Nucleic Acids4m
- Nitrogenous Bases16m
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- Phosphodiester Bond Formation7m
- Primary Structure of Nucleic Acids11m
- Base Pairing10m
- DNA Double Helix6m
- Intro to DNA Replication20m
- Steps of DNA Replication11m
- Types of RNA10m
- Overview of Protein Synthesis4m
- Transcription: mRNA Synthesis9m
- Processing of pre-mRNA5m
- The Genetic Code6m
- Introduction to Translation7m
- Translation: Protein Synthesis18m
9. Solutions
Osmotic Pressure
Scelta multipla
The osmotic pressure of blood is 5950.8 mmHg at 41ºC. What mass of glucose, C6H12O6, is needed to prepare 5.51 L of solution. The osmotic pressure of the glucose solution is equal to the osmotic pressure of blood.
A
54.7 g
B
0.304 g
C
419 g
D
302 g
0 Commenti
Guida verificata passo dopo passo1
Start by understanding the formula for osmotic pressure: \( \Pi = iMRT \), where \( \Pi \) is the osmotic pressure, \( i \) is the van't Hoff factor (which is 1 for glucose as it does not ionize), \( M \) is the molarity, \( R \) is the ideal gas constant (0.0821 L·atm/mol·K), and \( T \) is the temperature in Kelvin.
Convert the temperature from Celsius to Kelvin: \( T = 41 + 273.15 = 314.15 \) K.
Convert the osmotic pressure from mmHg to atm: \( \Pi = \frac{5950.8 \text{ mmHg}}{760 \text{ mmHg/atm}} \approx 7.83 \text{ atm} \).
Rearrange the osmotic pressure formula to solve for molarity \( M \): \( M = \frac{\Pi}{iRT} \). Substitute the values: \( M = \frac{7.83}{1 \times 0.0821 \times 314.15} \).
Calculate the mass of glucose needed using the molarity: \( M = \frac{\text{moles of solute}}{\text{volume of solution in liters}} \). Use the molar mass of glucose (180.18 g/mol) to find the mass: \( \text{mass} = \text{moles} \times 180.18 \text{ g/mol} \).
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