Molecules which regulate chemical processes without being used up are called
A. nucleotides.
B. acids.
C. catalysts.
D. bases.
Answer: C
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What is the IUPAC name of sec-butyl mercaptan?
A) 2-butanethiol B) 2-methyl-1-propanethiol C) 2-methyl-2-propanethiol D) none of these
What aspects of the physical geography of the Coastal South make it a leading tourist region in North America?
A) The many marshes and humid weather B) The warm climate and beaches C) Disney Land and Epcot D) Casinos in Louisiana and Mississippi
Between 20° to 35° north latitude and 20° to 35° south latitude are
A) warm and wet conditions, and the world's great tropical forests. B) the largest zone of water surpluses in the world. C) the world's largest arid and semi-arid desert regions. D) cyclonic systems of low pressure.
Which of the following is the H-O-H bond angle in water, H2O?
A) 109.5° B) 120.0° C) 104.5° D) 90.0°