Which of the following will determine the pH of a buffer made using acetic acid and sodium acetate?
A) the amount of water present
B) the [C2H3O2-]
C) the [HC2H3O2]
D) the ratio [C2H3O2-]/[HC2H3O2]
D
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The acceleration of any falling object that gains a velocity of 10 m/s each second is
A. 10 m/s2. B. 10 m/s. C. both of these D. none of the above
A polymorph can be defined as
A. minerals that have the same chemical formula and crystal structure, but exhibit different physical properties. B. a set of silicate minerals. C. minerals that have the same chemical formula, but different crystal structures. D. minerals that have the same crystal structure, but different chemical formulas.
What do geologists call the subsurface reservoir consisting of permeable rock that can transmits water freely?
a. Confining layer b. Vadose zone c. Aquifer d. Aquitard
A soft energy path is one that
a. relies on improving energy efficiency and increasing the use of a variety of renewable energy resources b. relies completely on the use of biofuels c. relies on the use of liquid fossil fuels d. relies on the use of soft money for research and development e. relies on soft coal