Increasing which of the following will decrease 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]
C
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Scientists have several hypotheses for why the Cambrian explosion occurred. Explain three of the hypotheses. What will be an ideal response?
Russian forces often employed a defensive tactic know as ______ _______, where all resources, including crops, roads, and buildings, were destroyed as the opposing army advanced to protect the motherland
Fill in the blank(s) with correct word
On a weather map, ________ fronts are shown by a line with semicircles extending from one side
A) cold B) warm C) occluded D) stationary
At oceanic spreading centers the crustal plates are ____.
A ) sinking B ) converging and sinking C ) converging and forming a ridge D ) being formed and spreading apart