(A)

ACS Final Review **Questions are taken from actual past ACS USNCO exams. It is an overview of the topics that will be covered on the exam based on `materials covered. Please continue to study and review the materials on your own as well. Glyoxal consists of 41.4% C, 3.5% H, and 55.1% O by mass. What is the empirical formula of glyoxal? (A) CHO ................
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