Which of the following observations was troublesome to 19th century chemists?
A) Benzene contains more hydrogen atoms than expected.
B) Benzene does not undergo combustion.
C) Benzene does not react similarly to alkenes.
D) Benzene reacts similarly to alkenes.
C
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What would happen to the relative humidity value in question 39 if the temperature were increased?
it would increase it would decrease it would remain the same it depends on the dew point temperature
When Mike sprints 100 yards in 20 seconds, his average running speed is
A. 50 yards/second. B. 5 yards/second. C. 1/2 yard/second. D. not enough information
Of the following pollutants, the greatest percentage of this one comes from fuel combustion
A) nitrogen oxides B) volatile organic compounds C) suspended particulate matter D) sulfur dioxide
Bioprospectors are ____.
A. miners that cause the extinction of plants and animals B. people who search for plants and animals that scientists can use to make medicinal drugs C. plants that contain phytochemicals D. conservation biologists that promote ecotourism E. people who decide which species should be protected