When a primary alcohol is oxidized to a carboxylic acid, an intermediate product is an aldehyde. Which physical property of the aldehyde can be exploited if it is desired to obtain the aldehyde as the reaction product?
A) boiling point
B) molecular weight
C) solubility
D) any of these
A
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What weather is associated with cA air masses?
A) nor'easters B) hot humid conditions leading to cumulus cloud development and showers or thunderstorms C) occasional periods of clear, cool weather in the summer D) cold spells in winter
When marine geologists collect a core of undeformed ocean-floor sediment, they know that the youngest layer is on the top of the core and the oldest is at the bottom because of the principle of ________.
A. supposition B. superposition C. suspension D. inclusion E. cross-cutting relationships
An example of point source pollution is
A. runoff from cropland. B. fertilizer runoff from lawns. C. litter from fishing boats. D. runoff from cropland. E. a drainpipe from a factory.
Why are Mesozoic and Cenozoic paleogeographic reconstructions more accurate than reconstructions for earlier time
intervals? a. Mesozoic and Cenozoic rocks are better preserved on ocean floor b. Mesozoic and Cenozoic rocks have not been destroyed by subduction c. Mesozoic and Cenozoic rocks were deposited underwater. d. Mesozoic and Cenozoic rocks have not experienced erosion. e. Very few tectonic events have occurred since Mesozoic and Cenozoic time