General Chemistry Online: Companion Notes: Compounds: Classifying compounds: Quiz: Interpret formulas

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Compounds

Classifying compounds

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1. The number of carbon atoms in 5 molecules of oxalic acid, H₂C₂O₄, is

2. How many atoms are in two molecules of blood sugar (C₆H₁₂O₆)?

none of these

3. The structures of the male and female sex hormones testosterone (C₁₉H₂₈O₂) and estradiol (C₁₈H₂₄O₂) are remarkably similar considering their profoundly different effects. Three molecules of testosterone contains how many more carbon atoms than three molecules of estradiol?

none of these

4. The number of hydrogen atoms in 8 molecules of methanol, CH₃OH, is

none of these

5. The deadly nerve gas tabun, (CH₃)₂NP(O)(C₂H₅O)(CN), was manufactured by the Germans in World War II but never used. A sample containing traces of tabun is found to contain 2.4 x 10¹⁹ nitrogen atoms. The maximum number of tabun molecules that the sample could contain is:

none of these

1.2 x 10¹⁹

4.8 x 10¹⁹

0.9 x 10¹⁹

2.4 x 10¹⁹

6. The compound SF₄ is a corrosive gas that attacks glass. Seven molecules of SF₄ contain a total of how many atoms?

General Chemistry Online! Quiz: Interpret formulas