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Concept explainers
Interpretation:
The two general requirements that must be met before a molecule can escape from the surface of a liquid during the evaporation process has to be given.
Concept Introduction:
Evaporation is a process in which the molecules escape from the liquid phase to the gas phase. According to Kinetic molecular theory evaporation can be explained as, not all the molecules present in a liquid or solid or gas possess the same the same kinetic energy and at any instant, some of the molecules may have above average kinetic energies and other may have below average kinetic energies as a result of collision between molecules. The molecules overcome attractive forces with other molecules.
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Chapter 7 Solutions
EBK GENERAL, ORGANIC, AND BIOLOGICAL CH
- What do buffers do? Describe a buffer system in the human body. Why is this important?arrow_forwardA 1.143 g sample contains only vitamin C (C,H, 0,) and sucralose (C,H,Cl, O,). When the sample is dissolved in water to a total volume of 31.7 mL, the osmotic pressure of the solution is 3.91 atm at 285 K. What is the mass percent of vitamin C and sucralose in the sample? vitamin C: sucralose: %arrow_forwardWhen the concentration of H+ ions in a solution decreases, a buffer maintains the pH of a solution by?arrow_forward
- What is the final concentration if 75 mL of a 3.5 M glucose solution is diluted to a volume of 450 mL?arrow_forwardBuffer systems can absorb hydrogen ions from the blood to increase pH into homeostatic range (pH: 7.35 to 7.45)During what condition would buffer systems do this?arrow_forwardWhy do electrolytes require a decreased concentration of solutes in order to reach the isosmotic threshold? Why are these concentrations not the same for all electrolytes?arrow_forward
- Our biological fluids are much buffered by the biomolecules they contained. Name the two biomolecules that can act as the buffering components and briefly explain how these are done.arrow_forwardWhat is the function of buffer systems in living organisms and why are they important in the chemistry of the circulatory system?arrow_forwardIf you added three proteins (Protein A, pI 5.0; Protein B, pI 6.0; Protein C, pI 7.0) to an anion exchange column equilibrated with bicine buffer, pH 8.5, in what order would these protein be expected to elute as the column was loaded, washed, and then increasing amounts of NaCl were added?arrow_forward
- How much of the enzyme proteinase k (solute) is required to make 250ml of a solution with a concentration of .01mg/ml? (Weight/volume ratio)arrow_forwardin a solution, the solvent is: A) always a gas B) always water C) the substance that is dissovled D) the substance in the Greatest amountarrow_forwardHow do buffers work?arrow_forward
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