match the following

1. Iodine - Pure substance

2. Nitrogen - Mixture

3. Ozone - Neutral

4.Alloys - Sublimate

5. Atom - Nonmetal

6. Compounds - Triatomic

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What are the units for absorptivity when the path length is given in centimeters and the concentration is

expressed in

(i) parts per million?

(ii) micrograms per liter?

(iii) mass-volume percent?

(iv) grams per liter? 

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For a system of NaCl(s) and NaCl(aq) in equilibrium, find the number of degrees of freedom (f) if the solid is considered to consist of the single species NaCl and the solute species present in solution:

a. is considered to be NaCl(aq);

b. are taken to be Na+(aq) and Cl-(aq).

c. Must your answers for (a) and (b) be the same? Why or why not?

For a system of NaCl(s) and NaCl(aq) in equilibrium, find the number of degrees of freedom (f) if the solid is considered to consist of the single species NaCl and the solute species present in solution:

a. is considered to be NaCl(aq);

b. are taken to be Na+(aq) and Cl-(aq).

c. Must your answers for (a) and (b) be the same? Why or why not?