Whether volcanic eruptions are very explosive or relatively quiet is largely determined by
A. the ease or difficulty with which the gas escapes to the atmosphere
B. the viscosity of a lava
C. the amount of gas in the lava or magma
D. all of the preceding
Answer: D
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What is the typical size of the hydrocarbons found in lubricating oil?
A) C5 to C12 B) C12 to C16 C) C15 to C18 D) C16 to C20
A sample of carbon dioxide occupies 22.4 L at STP. Which of the following statements apply to the sample?
A) The sample contains 6.02 x 10^23 atoms. B) The sample contains 6.02 x 10^23 atoms of oxygen. C) The sample contains 6.02 x 10^23 molecules. D) None of the above is correct.
A tropical maritime air mass is likely to be ________
A) dry and cold B) dry and warm C) wet and cold D) wet and the same temperature E) wet and warm
The U.S. National Academy of Sciences estimates that 13 ________ pounds of litter enters the world's oceans each year
A) hundred B) thousand C) million D) billion E) trillion