Concept explainers
For Problems 74 and 75t, classify each of the numbered statements as (a) an experiment, (b) a hypothesis. (c) a scientific law, (d) an observation, or (e) a theory. (It is not necessary to understand the science involved to do these problems.)
74. In the early 1800s, many scientific advances came from the study of gases. (1) For example, Joseph Gay-Lussac reacted hydrogen and oxygen to produce water vapor, and he reacted nitrogen and oxygen to form either dinitrogen oxide
(N2O) or nitrogen monoxide (NO). Gay-Lussac found that hydrogen and oxygen react in a 2:1 volume ratio and that nitrogen and oxygen can react in 2:1 or 1:1 volume ratios depending on the product. (2) In 1808, Gay-Lussac published a paper in which he stated that the relative volumes of gases in a
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Chemistry For Changing Times (14th Edition)