Answers to a few select problems on the review.

#3 0.12M
#9.  [H2] = 1.17M
#13  9.17%
#14 0.2 M
#16 23.1%
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#5 0.0145g
#6 1.6 M
#7 dissolve 50 grams of table salt in 0.4 L of water