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A. To discuss the results of the lab experiment.
B. To answer the students' questions about the lab experiment.
C. To explain the method of collection by water displacement.
D. To prepare the students to do the lab experiment.
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A. The hydrochloric acid broke the carbon bonds in the carbon dioxide.
B. The magnesium oxide broke the carbon-oxygen bonds in the carbon dioxide.
C. The burning magnesium broke the carbon-oxygen bonds in the carbon dioxide.
D. The gas collection method broke the carbon-oxygen bonds in the carbon dioxide.
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