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Which robber baron became one of the wealthiest people in the world by creating a trust that controlled most of the oil refineries in the United States? A. John D. Rockefeller B. Cornelius Vanderbilt C.
asked
Aug 3, 2017
History
high-school
2
answers
5
votes
42.5k
views
Which polyatomic ion is found in the compound represented by the formula NaHCO3? (1) acetate (3) hydrogen sulfate (2) hydrogen carbonate (4) oxalate Any explanation for this question?
asked
Sep 17, 2016
Chemistry
high-school
1
answer
3
votes
195k
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