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