A lot of the world may be gearing up for the Summer Olympics in London. But this week in Maryland (just a relatively hop, skip, and jump away from C&EN headquarters) high school students from 72 nations are competing in the extremely challenging International Chemistry Olympiad (IChO). The students have been preparing for months for the event by studying a book of preparatory problems. See how challenging the questions are for yourself. Each day this week, we’ll post a new question from that book. Let us know how you do!
Monday’s question (left) and answer (right):
Tuesday’s question and answer:
Wednesday’s question and answer:
Thursday’s question and answer:
Friday’s question and answer:
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