A chemist has two pure samples of an organic compound, one of which she obtained from a natural source, and one of which she synthesized in the lab. Which of the following properties can she use to determine which is the synthetic sample?
A) boiling point
B) formula weight
C) solubility
D) none of these
D
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Which of the following best matches the description?Designations that restrict future building in floodplains.
A. zoning B. multiple land use C. tract development D. urban sprawl E. floodplain F. ribbon sprawl G. megalopolis H. wetlands I. floodplain zoning J. land-use planning
Which of the following statements regarding freshwater and saltwater drownings is correct?
A) Freshwater drowning has a much higher mortality rate. B) Patients with freshwater drowning often require diuresis. C) Both freshwater and saltwater can lead to pulmonary injuries. D) Normal saline should be avoided in saltwater drowning victims.
Which of the following are true for horsts and grabens?
A. A horst is a block that is uplifted relative to blocks on either side. B. A graben is a block that is dropped down relative to blocks on either side. C. These are all true of horsts and grabens. D. May form associated with multiple normal faults.
When an agrarian economy transitions to an industrial economy, what effect does it have on the population?
a. The total population decreases. b. Population growth rate slows. c. TFR will increase since women are able to stay at home rather than work in the fields to grow food. d. The population growth becomes exponential.