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 ratio of carbon to hydrogen in acetic acid, HC₂H₃O₂, is:

2:1

2:3

1:2

none of these

3:2

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. Realgar, As₂S₂, is a soft red-orange mineral that was once used in colored fireworks. An explosion that releases a million atoms of arsenic could contain how many molecules of realgar?

1 x 10⁵

5 x 10⁵

1 x 10⁶

2 x 10⁵

2 x 10⁶

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

none of these

6. Stearin, C₃H₅(C₁₈H₃₅O₂)₃, is a constituent of most animal fats and is used for making soap, candles, and candies. How many carbon atoms are in one molecule of stearin?

none of these

General Chemistry Online! Quiz: Interpret formulas