The reaction of which combination of reactants result in the formation of a hemiacetal?
A) aldehyde and alcohol
B) aldehyde and amine
C) aldehyde and carboxylic acid
D) aldehyde and water
A
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What is an internal cost of driving a domestic car?
A. Air pollution and litter B. Cost of materials used in manufacture C. Highway accidents D. Health costs E. Hazardous wastes produced by car exhaust
What type of storm was Superstorm Sandy?
a. A tropical disturbance b. An extratropical cyclone c. A hurricane d. A nor'easter and a tropical storm e. A hurricane and an extratropical cyclone
Which is not true about social media?
A) Social media have started to play a role in breaking the monopoly of government control over the diffusion of information. B) Social media are even more difficult for governments to block or sensor as compared to TV or Internet. C) Social media are saturated globally and not significantly growing. D) In terms of the percentage of global social media users, the United States is on the decline, but still dominates the most popular twitter positions. E) According to map 4.8.4, China prefers QZone.
Compaction of soil in a garden harms plants by ________
A) decreasing aeration, decreasing infiltration, and increasing runoff B) decreasing aeration, increasing infiltration, and decreasing runoff C) increasing aeration, increasing infiltration, and decreasing runoff D) increasing the amount of clay, decreasing the amount of silt, and decreasing infiltration E) increasing aeration, decreasing infiltration, and increasing runoff