What happens to the pH of an acidic solution as water is added?
A. The pH will decrease since more hydronium ions are produced from the water.
B. The pH will decrease as the solution becomes more dilute.
C. The pH is not influenced by the addition of water.
D. The pH will increase as the solution becomes more dilute.
Answer: D
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Fill in the blank(s) with the appropriate word(s).
Which of the following is a serious hazard to aircraft?
a. molecular viscosity b. laminar flow c. clear-air turbulence d. long waves in the westerlies e. none of these
Over the past 60 years, as people moved from U.S. cities to suburbs, the people that were left behind in the cities were primarily
A) older, poor people representing ethnic minorities. B) younger, wealthy people representing ethnic minorities. C) older and wealthy Caucasians. D) younger Caucasians.
Processes that decrease seawater salinity include evaporation and sea ice formation.
a. true b. false