Which of the following is the [H3O+] in pure water at room temperature?

A) 1.0 x 10^-14 M
B) 1.0 x 10^-7 M
C) 1.0 x 10^7 M
D) 1.0 x 10^14 M


B

Environmental & Atmospheric Sciences

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Soil composed of broadly similar proportions of sand, clay and silt is

A. leached. B. loam. C. pedocal. D. laterite.

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The two most powerful neighbors of the early Romans were

A) Phoenicians in the north, and the Latins in the south B) Greeks in the north, and Etruscans in the south C) Etruscans in the north, and Greek colonies in the south D) Etruscans in the north, and Sabines in the south

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Drainage basins are closed systems in terms of matter

Indicate whether the statement is true or false

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The acceptance of a theory or hypothesis is based on ________

A) a preponderance of evidence B) a hunch C) a belief D) the pronouncements of authorities E) common sense

Environmental & Atmospheric Sciences