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Quiz: Interpret formulas
1. The banned insecticide DDT, (ClC6H4)2CHCCl3, contains how many chlorine atoms per molecule?
1935144
2. 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:
1.2 x 10192.4 x 10190.9 x 10194.8 x 1019none of these
3. 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 1051 x 1062 x 1062 x 1055 x 105
4. 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
600 S and 600 F6 S and 6 F100 S and 600 F1 S and 6 F
5. 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 these54311251
6. In four molecules of sulfuric acid, H2SO4, there are:
16 atoms total8 H atoms; 4 S atoms; 16 O atoms.
4 H atoms; 4 S atoms; 4 O atoms.2 H atoms; 1 S atom; 4 O atoms.
4 atoms total.
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General Chemistry Online! Quiz: Interpret formulas

Copyright © 1997-2005 by Fred Senese
Comments & questions to fsenese@frostburg.edu
Last Revised 06/11/07.URL: http://antoine.frostburg.edu/chem/senese/101/compounds/interpret-formulas-quiz.shtml