Cells and tissues of all organisms are made primarily of ________
A) salt
B) cellulose
C) carbon dioxide
D) hydrogen
E) water
Answer: E
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Which of the following would have the highest boiling point?
A. C6H14 B. C12H26 C. C10H22 D. C8H18 E. not enough information given
The charges with sodium chloride are all balanced-for every positive sodium ion, there is a corresponding negative chloride ion. Since its charges are balanced, how can sodium chloride be attracted to water, and vice versa?
A. This is not a matter of attraction. Sodium chloride dissolves in water because water provides a medium in which the individual sodium and chloride ions can disperse. B. Hydrogen bonding in water allows the sodium chloride molecule to be attracted to the water molecule. C. Dispersion forces come into play as the sodium chloride and water come into close proximity. D. As a water molecule gets close to the sodium chloride, it can distinguish the various ions and it is, thus, attracted to an individual ion by ion-dipole forces.
If the dry-bulb temperature is 90°F and the wet-bulb temperature is 79°F, What is the dew point?
Using the psychrometer tables and the table of saturation mixing ratios, answer the question about determining relative humidity with a sling psychrometer. What will be an ideal response? __________ °F
The early Paleozoic history of continents involves ____
a. widespread glaciation b. stable plate positions c. mountain building and marine transitions/regression. d. extensive volcanism e. subduction and emplacement of batholiths