What's the main function of dill pickles?
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Why is the story titled “A Dill Pickle”?
A dill pickle tastes sour,________, bitter and ________.
After youtasted dill pickles, you wouldenjoy them a lot.
A. 对
B. 错
已知35.0% HClO4 (M = 100 g·mol-1)水溶液的密度为1.251 g·mL-1，则其质量摩尔浓度为( )
A. 5.38mol·kg-1
B. 4.38mol·kg-1
C. 3.00mol·kg-1
D. 2.68mol·kg-1
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