Qualitatively, what happens to the hydroxide ion concentration if you decrease the hydronium ion concentration?
A) The concentration of OH- stays the same but the ratio OH-/H3O+ changes.
B) The concentration of OH- increases but the ratio stays the same.
C) The concentration of OH- increases.
D) none of the above
C
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The future use of photovoltaics is likely to
A) increase, because they can be adapted to meet a variety of needs B) increase, because the energy is less expensive than that generated by fossil fuels C) decrease, because they have proven to be inefficient D) decrease, because they require large, centralized generating facilities
Most of the tourism and recreation sector in the Great Plains relies on visitors from where?
A) People from overseas B) People from nearby regions C) People from the the Great Plains D) People from all over North America
The most costly hurricane ever to hit the United States was Hurricane
a. ?Ivan. b. ?Katrina. c. ?Wilma. d. ?Andrew. e. ?Camille.
The term debris implies that coarse-grained fragment predominates in the soil.
Answer the following statement true (T) or false (F)