Which of the following is true of methanol, CH3OH, when it dissolves in water?
A) It dissociates into ions.
B) It forms covalent bonds with water.
C) It forms hydrogen bonds with water.
D) None of the above, methanol does not dissolve in water.
C
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Genetic resistance to antibiotic drugs is an important example of
a. an adaptive trait in humans b. natural selection c. a beneficial mutation d. a harmful mutation e. Evolution
A favorable condition for hurricane development is a
a. deep layer of stable air. b. shallow layer of absolutely unstable air. c. shallow layer of conditionally unstable air. d. deep layer of conditionally unstable air. e. completely stable environment.
Which of the following environmental philosophies is currently the most conventional?
A) conservation B) environmental ethics C) deep ecology D) ecofeminism E) preservation
According to the National Vital Statistics Reports, approximately what fraction of Americans who will die or become disabled from cultural hazards will do so because of smoking cigarettes?
A) 4 in 10 B) 3 in 10 C) 2 in 10 D) 1 in 10