The reaction of country rock with solutions from a cooling magma is known as:
a. hydrothermal solution.
b. hydroxide alteration.
c. geothermal alteration.
d. hydrothermal alteration.
e. hydrostatic alteration
D
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In the Köppen system, which climate group is related to the temperature trend of the average lapse rate?
A. polar B. tropical C. highland D. dry E. midlatitude
Which of the following statements are true? (i) 1-propanethiol has a higher boiling point than 1-propanol (ii) 1-propanethiol has a comparable boiling point to CH3CH2SCH3 (ethyl methyl sulfide) (iii) 1-propanethiol is much more acidic than 1-propanol
A) (i) and (ii) only B) (i) and (iii) only C) (ii) and (iii) only D) (i), (ii) and (iii)
Which of the following alcohols is used as an oxygenate additive in gasoline used by conventional road vehicles?
A) ethanol B) isopropanol C) methanol D) none of these
Before time zones were created in the 1880s, one could encounter ________ local times during a rail trip across the United States
A) no B) 1 C) 2 D) 3 E) many