The systematic names for water, ammonia, and methane are dihydrogen monoxide, H2O; trihydrogen nitride, NH3; and tetrahydrogen carbide, CH4. Why do most people, including chemists, prefer to use the common names for these compounds?
A. These compounds are encountered frequently.
B. The common names are shorter and easier to pronounce.
C. The common names are more widely known.
D. all of the above
Answer: D
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The San Andreas Fault is a ___ fault.
Fill in the blank(s) with the appropriate word(s).
Why is the probability of dying from a meteorite impact greater than that of dying in an automobile accident?
A) because fatal meteorite impacts are likely to occur very frequently B) because there is a high probability that any person will be hit directly by a meteorite C) because a large meteorite impact would cause a very high number of fatalities D) because there are millions of meteoroids in near-Earth orbit
The closer the dew point temperature is to the actual air temperature, the lower the relative humidity
Indicate whether the statement is true or false
Explosive volcanoes can be so unpredictable that even volcanologists monitoring and studying them can be killed by unexpected eruptions.
Answer the following statement true (T) or false (F)