The pKa of hydrocyanic acid is 9.31. What is the Ka of hydrocyanic acid?

A) 1.3 x 10^-24
B) 1.3 x 10^-10
C) 4.9 x 10^-10
D) 2.0 x 10^9


C

Environmental & Atmospheric Sciences

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There are several kinds of nuclear waste that require specific kinds of disposal. Which of the following statements is correct?

A. High-level nuclear waste must be stored underground. B. Certain kinds of waste (transuranic waste) are stored in the waste isolation pilot plant in New Mexico. C. Low-level radioactive waste must be stored in the state where it was produced. D. None of these statements is correct.

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List the three stages of stream development, and explain what happens in each along with the associated changes to the surrounding topography

Environmental & Atmospheric Sciences

Although it is difficult to get a precise number of active volcanoes, a common estimate is about ____

A)100 B)250 C)550 D)1100 E)2000

Environmental & Atmospheric Sciences

Under which condition would air pollution over a city typically be highest?

A) on a rainy night B) on a clear, calm night C) on a rainy day D) in the afternoon

Environmental & Atmospheric Sciences