Which of the following buffers will have the highest pH?
A) a solution containing 0.20 M HC2H3O2 and 0.20 M NaC2H3O2
B) a solution containing 0.25 M HC2H3O2 and 0.15 M NaC2H3O2
C) a solution containing 0.15 M HC2H3O2 and 0.25 M NaC2H3O2
D) They all have the same pH.
C
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Radical environmentalists who believe that the environment is sacred and should not be exploited are
A) conservationists. B) preservationists. C) political ecologists. D) cultural ecologists. E) ecological imperialists.
What is the difference between an ocean and a sea?
A. An ocean is a vast body of water encompassing 70% of the Earth, whereas a sea refers specifically to a large, inland, saline body of water. B. The term sea is used to describe the global, interconnected water body covering 70% of the Earth's surface, whereas oceans refer to the individual basins within this global sea. C. Seas are generally smaller than an ocean and tend to be associated with land masses, whether partially enclosed by land or large, inland, saline water bodies. D. There is no difference, just a different term for the same physical feature.
Rainbows are always seen with the Sun:
A) ahead of you. B) behind you. C) to your left. D) 42 degrees above the horizon. E) to your right.
If you visited Mount Shasta City (elevation 900 m [3000 ft.]) and found the outside air temperature to be 27°C (81°F),
what would be the air temperature at the summit of Mount Shasta (elevation 4200 m [14,000 ft.]) at that moment—assuming that the temperature conditions with altitude change at an average, or normal, lapse rate? A) 0.2°C (32.0°F) B) 5.9°C (42.5°F) C) -6°C (20.5°F) D) 48.1°C (119.5°F) E) 7.2°C (44.7°F)