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- (A) if both sentences are true,(B) if both sentences are false,(C) if the first sentence is true but the second is false, and(D) if the first sentence is false but the second is true. 1. Insufficient dissolved oxygen is necessary for the life of fish and other aquatic organisms. As aquatic photosynthesis is light dependent, the dissolved oxygen produced will peak during daylight hours and decline at night. 2. The solubility of oxygen in water increases at colder temperatures, and decreases at higher temperatures. DO can be measured in milligrams of oxygen (O2) per liter of water. 3. The ideal electrical conductivity of totally pure water is 0.055 microSiemens, whereas typical deionized water has an electrical conductivity of 0.1 microSiemens. The freezing point of water at 1 atm is 100degC. 4. When water is mixed with metals, a metal hydroxide is formed and oxygen gas is evolved. The evolution of the oxygen gas from the reaction of metals and water is indicated by the hastened…Caffeine's solubility limit is about 2.2 %w/w in water at 25 Celsius degrees. Now, if I prepare a 5 %w/w PVA aqueous solution. Is the solubility limit increased or decreased (at room temperature) for this PVA solution? Why? Give me a very detailed explanation please.Polychlorinated biphenyls (PCBS) are a major environmen- tal problem. These oily substances have many uses, but they resist breakdown by bacterial action when spilled in the environment and, being fat-soluble, can accumulate to dangerous concentrations in the fatty tissues of fish and animals. One little-appreciated complication in controlling the problem is that there are 209 different PCBS, all now in the environment. They are generally similar, but their solu- bilities in fats differ considerably. The best measure of this is Kow, the equilibrium constant for the partition of a PCB between the fat-like solvent octanol and water. PCB(aq) = 2 PCB(octanol) An equimolar mixture of PCB-2 and PCB-11 in water is treated with an equal volume of octanol. Determine the ratio between the amounts of PCB-2 and PCB-11 in the water at equilibrium. At room temperature, Kow is 3.98 × 104 for PCB-2 and 1.26 × 10° for PCB-11.
- Determine the values of Kc that correspond to the following values of Kp. 1.) SO2CI2(g)—›‹—SO2(g)+CI2(g) Kp=2.9×10^-2 at 303K 2.) 2 NO2(g)—›‹— 2 NO(g)+O2(g) Kp=0.275 at 700k 3.) CO(g)+CI2(g)—›‹—COCI2(g) Kp=22.5To analyze an aspirin sample, 0.3470 g of crushed tablets are weighed and treated with 50.00 mL 0.1155 M sodium hydroxide, boiling for 10 minutes. Under these conditions the acid acetylsalicylic (MW, 180) reacts according to: CH3COO-C6H4-COOH + 2 OH- → OH-C6H4-COO- + CH3COO- The excess NaOH is then titrated with 11.5 mL of 0.2100 M HCl. What is the purity of said show ?.Consider the following information: Ksp(BasO4) = 1.1 x 10-10 Ksp(CasO4) = 4.9 x 10-5 Ksp(PbSO4) = 2.5 x 10-8 Ksp(Cd(OH)2) = 2.5 x 10-14 Ksp(Cr(OH)3) = 1.6 x 10-44 These compounds arranged in order of increasing aqueous solubility is a. PBSO4 < Cd(OH)2 < BaSO4 < Cr(OH)3 Ob. Cr(OH)3 < Cd(OH)2 < BasO4.Calculate the saturation concentration of the following gazes in water at air temperature of 20 °C and a pressure of 1 atm if its concentration in air is 30 ppm. Concentration in air (Cg) 20ppm 370 ppm 2 ppb Gaz H;S CO, CH,Consider the following information: Ksp(BasO4) = 1.1 x 10-10 Ksp(CaSO4) = 4.9 x 10-5 Ksp(PbSO4) = 2.5 x 10-8 Ksp(Cd(OH)2) = 2.5 x 10-14 Ksp(Cr(OH)3) = 1.6 x 10-44 These compounds arranged in order of increasing aqueous solubility is a. Cd(OH)2 < CasO4 < PbSO4 < BaSO4 O b. Cd(OH)2 < Baso4 < PBSO4 < CaSO4 O. Cd(OH)2 < Cr(OH)3 < BaSO4In which solution will NH,NO, be most soluble in? 1.0 Μ ΗΝO; О 1.0 м КОН O 1.0 M NaCl O 1.0 M NH4B1 Ο 1.0 ΜΚΝ, 1.0 Μ KNΟ;4 what are some real life examples of thermodynamic studies of Dissolution of Urea? How can this be used in everyday life?Describe the clinical effects of elevated concentrations ofsodium ions in the blood.β‑Galactosidase (β‑gal) is a hydrolase enzyme that catalyzes the hydrolysis of β‑galactosides into monosaccharides. A 0.395 gsample of β‑galactosidase is dissolved in water to make 0.138 L of solution, and the osmotic pressure of the solution at 25 ∘Cis found to be 0.609 mbar. Calculate the molecular mass of β‑galactosidase.SEE MORE QUESTIONSRecommended textbooks for youChemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage LearningChemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage Learning