Explain why an old bottle of aspirin might smell like vinegar. Write the reaction scheme to support your answer.

Which of the following pairs of elements belong to the same groupa. h and he b. li and bec. c and pb d. ga and ge

10. translate each of the following chemical equations into a sentence. a. 2 zns(s) + 3 o2(g) -> 2 zno(s) + 2 so2(g) b. cah2(s) + 2 h2o(l) -> ca(oh)2 (aq) + 2 h2(g)

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