A sodium hydroxide solution has a pH of 11.40, what is the [H3O+] in this solution?
A) 4.0 x 10^-26 M
B) 4.0 x 10^-12 M
C) 2.5 x 10^-3 M
D) 2.5 x 10^11 M
B
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According to the U.S. Environmental Protection Agency, one of the five top toxic substances of major concern to human and environmental health is
A. sodium. B. lead. C. oxygen. D. gold. E. polonium.
Which of the following processes occurs when fog "burns off"?
A. It evaporates. B. It thickens from the ground up. C. It absorbs sunlight and warms up. D. It settles to the ground in the form of rain.
Which plate subducts when oceanic and continental plates meet and why?
A) The continental plate subducts beneath the oceanic plate because the oceanic plate is most dense. B) The continental plate subducts beneath the oceanic plate because the continental plate is most dense. C) The oceanic plate subducts beneath the continental plate because the oceanic plate is most dense. D) The oceanic plate subducts beneath the continental plate because the continental plate is most dense.
The epicenter of an earthquake is the point of rupture along the fault
Indicate whether the statement is true or false