Why does water only have a density of 4?
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Q: Why does water have a max density at 4°C?
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Q: As pH increases, there is increasingly more H+ than OH-
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Why does water only have a density of 4?
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- A solution has a hydrogen ion concentration of 0.01 mol/L. What is its pH? What is its hydroxide ion concentration? Is it acidic, basic, or neutral? How does the hydrogen ion concentration of this solution differ from one with a pH of 1?(b) Explain each of the following in terms of the properties of water. You are not limited to the three properties discussed in part (a): • the role of water as a medium for the metabolic processes of cells • the ability of water to moderate temperature within living organisms and in organisms' environment • the movement of water from the roots to the leaves of plants B IU 0/1How would you make 2 liters of a 0.5M Tris buffer ph of 7.6
- Given 2 M Tris, pH 7.1 (pKa 8.0), 5 M NaOH, 5 M HCI, and water; how would you prepare 2 L of 0.2 M Tris, pH 7.4?If there is an increase in the hydrogen ion concentration from 38 nmol.l-1 to 82 nmol.l-1, what does the pH change from and to?Why doesn't frozen water sink in liquid water? Is the liquid phase of water more or less dense than the solid phase? What accounts for this pattern? Is this an unusual pattern (by comparison to other molecules)? Explain. Be specific.
- You are stranded on a lifeboat with several other people in the middle of the ocean. You have run out of clean drinking water and are very thirsty. The others have started to drink the seawater to quench their thirst. Since you’re waiting for rescue (and are a top notch AP Biology student), you decide to solve a couple of water potential problems to determine if drinking sea water is a good idea or not. a) The majority of dissolved ions in seawater is NaCl, roughly a 0.5M concentration. The ionization constant of NaCl is 2.0. Calculate the solute potential for seawater if you know that the water is 2°C. b) Your own cells have a 0.15M concentration. Calculate the solute potential for your own cells, knowing that body temperature is 37°C. c) Using your knowledge about water potential, if you drink the seawater, wat will happen when the seawater comes into contact with your body’s cells? Note: ΨP for animal cells is zeroWhy is pH balance in water important?Why does water have such interesting and unique properties?
- Which one of the following structures is least acidic? OH O₂N 04 3 01 02 1 2 OH O₂N OH OH 3If a solution has a pH of 1, how many more H+ are present than in a solution with a pH of 4?If the pH is 2, what is the %HA at of a molecule has a pka = 6? Report the answer to one decimal place. Your Answer: Answer units