II. Iodine is essential for the synthesis of growth- regulating thyroid hormones. It can be absorbed by the body as iodide anion, I. Illustrate how the polar water molecules are oriented towards the iodide ion (I). For simplicity, draw three water molecules surrounding one I ion.

5.) The Henry's Law constant for O3 in water at 25 °C is 1.2x10-2 M/atm. What pressure of O3, in atm, would be required to give a [O3] = 0.0275 M?   Your Answer:

Write an electroneutrality relationship for this water

Calculate the mass of oxygen (in mg) dissolved in a 2.50 L bucket of water exposed to a pressure of 2.13 atm of air.  Assume the mole fraction of oxygen in air to be 0.21 and the Henry's law constant for oxygen in water at this temperature to be 1.3 × 10-3 M/atm. Molar mass for oxygen (O2) is 31.9988 g/mol.     A. 46.5 mg   B. 27.0 mg   C. 13.7 mg   D. 23.5 mg   E. 9.87 mg

Which of the following is likely to have the highest conductivity? Deionized water (DI) Tap water ethanol (CH3CH2OH)

Would you expect carbon tetrabromide and water to be miscible? Why or why not?

Place 8.5 g of sodium nitrate and 7.5 g of potassium chloride  in a 100 ml beaker and add 25 ml of water. Warming and stirring to dissolve completely.  Assuming  a volume of 25 ml for the solution, calculate the polarity of the solution  with respect to NaNO3, KCl, NaCl, KNO3.

based on the conductivity results of pure distilled water, does water exist predominantly as ions or molecules?

Define covalent, ionic and hydrogen bonding. Which of these bonds is/are important in determining the properties of water? EXPLAIN

Use the picture below to answer the following question: Hydrated ions Na+ ions CI- ions Water molecules