Which of the following buffers will have the best buffer capacity?
A) a solution containing 0.1 M HC2H3O2 and 0.1 M NaC2H3O2
B) a solution containing 0.05 M HC2H3O2 and 0.15 M NaC2H3O2
C) a solution containing 0.15 M HC2H3O2 and 0.05 M NaC2H3O2
D) They all have the same buffer capacity.
A
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A 200-m length of copper wire is heated and gains 0.18 m in length. If the wire were instead 100-m long, the length gained would be
A. 0.09 m. B. also 0.18 m. C. 0.36 m. D. more than 0.36 m.
The most violent type of cloud is the ________
Fill in the blank(s) with the appropriate word(s).
When it is January and winter in the Northern Hemisphere, it is ____ and ____ in the Southern Hemisphere
a. January; summer b. January; winter c. July; winter d. July; summer e. March; spring
The soil-forming factor that has the greatest effect in differentiating soil at the global-regional scale is ____
a. parent material b. land surface configuration c. climate d. vegetation type