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

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Compounds

Classifying compounds

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

none of these

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

none of these

3. The compound SF₆ is a colorless, odorless, extremely heavy gas, about 5 times as dense as air. A sample of 100 molecules of SF₆ contains

6 S and 6 F

100 S and 600 F

600 S and 600 F

1 S and 6 F

4. 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:

2.4 x 10¹⁹

0.9 x 10¹⁹

none of these

1.2 x 10¹⁹

4.8 x 10¹⁹

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

6. The total number of atoms in 10 molecules of CO₂ is:

none of these

General Chemistry Online! Quiz: Interpret formulas