Which of the following is not a reason that the tracer material was found at varying concentrations?
A) impermeability of materials
B) varying pore sizes
C) varying circuitous routes of water molecules
D) spreading out over a large volume of water
Answer: A
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Which of the following compounds would least likely act as an acid?
A. H2SO4 B. HSO4-1 C. NH3 D. CH3CO2H E. SO4-2
What is the hydroxide ion concentration in an aqueous solution where the pH = 5?
A) The hydronium ion concentration equals 1 × 10-9. B) The hydronium ion concentration equals 1 × 10-7. C) The hydronium ion concentration equals 1 × 10-5. D) The hydronium ion concentration equals 1 × 10-3.
What is an example of authigenic sediment?
a. Quartz sand b. Phosphorite deposits c. Volcanic dust d. Diatomaceous ooze e. Tektite spheres
As of 2010, which of the following states has the largest percentage of Latino (Mexican-born, Mexican-heritage, and Spanish-heritage) residents?
A) Texas B) Arizona C) New Mexico D) All three states have about the same percentage of Latino residents