If the pH of a solution is 10, what is the hydroxide ion concentration?
A. 4 M
B. ?14 M
C. 14 M
D. ?1 × 1014 M
E. 1 × 10-4 M
Answer: E
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A globe is a better model of the Earth than a flat map
Indicate whether the statement is true or false.
Which of the following statements is true?
A) Environmental policy debates are almost always politically divisive. B) Deregulation efforts typically lead to more effective policy. C) National elections rarely influence environmental policy. D) Environmental policy springs mostly from science and not election results.
Astana, Kazakhstan experiences hot summer, cold winters, and arid conditions; these conditions are typical of ________ climates
A) Mediterranean B) continental C) arctic D) marine west coast
Principal stresses:
a. are mutually perpendicular to each other b. act on planes on which there are no shear stresses c. are all different in magnitude d. all of the above