Science Home Product Information Site Map Search Contact Us   Glencoe Online
Quizzes Quiz
Chapter 11: The Mole

Practice Test
  1.What relationship is described by the formula below?
(mass of the element/mass of the compound) × 100
  a.   empirical formula  
  b.   mole ratio  
  c.   Avogadro’s number  
  d.   percent composition  
  2.A compound contains sulfur, oxygen, and chlorine. Analysis of a sample showed that it contained by mass 26.95% sulfur and 59.61% chlorine. What is the simplest formula for this compound?  
  a.   SO2Cl  
  b.   SO2Cl2.  
  c.   SOCl  
  d.   SOCl2.  
  3.How many moles of hydrogen atoms are present in 2.0 moles of ammonia NH(3)?  
  a.   6.0 mol  
  b.   2.0 mol  
  c.   3.0 mol  
  d.   8.0 mol  
  4.How many moles of atoms are present in one mole of water?  
  a.   2 mol  
  b.   3 mol  
  c.   1 mol  
  d.   6 mol  
  5.A compound that has a specific number of water molecules bound to the structure is ______________?  
  a.   waterlogged  
  b.   a hydrate  
  c.   an anhydrate  
  d.   aqueous  
  6.A sample of a compound is found to contain 0.404 grams of Fe and 0.174 grams of O. What is the empirical formula for this compound?  
  a.   Fe2O3  
  b.   FeO  
  c.   Fe3O4  
  d.   FeO2  
  7.What is the mass of 5.0 × 1021 molecules of water?  
  a.   6.02 x 1023 g  
  b.   0.15 g  
  c.   8.3 x 10-3 g  
  d.   5.0 g  
  8.What is the mass of 1.0 × 1012 molecules of O2?  
  a.   2.7 × 10-11 g  
  b.   6.0 × 1011 g  
  c.   5.3 × 10-11 g  
  d.   1.9 × 1013 g  
  9.How many particles are present in one mole of particles?  
  a.   6.02 × 1023  
  b.   1  
  c.   12  
  d.   3.0 × 108  
  10.Which word indicates that two water molecules are associated with a substance in a chemical compound?  
  a.   tri-  
  b.   mono-  
  c.   di-  
  11.A 4.628-g sample of an iron oxide was found to contain 3.348 g of iron and 1.280 g of oxygen. What is the simplest formula for this compound?  
  a.   Fe3O4  
  b.   FeO2  
  c.   FeO  
  d.   Fe2O3  
  12.What mass of iron is contained in 62.8 grams of pyrite FeS(2)?  
  a.   58.5 g  
  b.   40.3 g  
  c.   29.2 g  
  d.   31.7 g  
  13.What is the percent composition of carbon dioxide CO(2)?  
  a.   33% C and 66% O  
  b.   27% C and 73% O  
  c.   73% C and 27% O  
  d.   50% C and 50% O  
  14.How many moles of hydrogen are present in 2.0 grams of hydrogen gas?
  a.   4.0 mol  
  b.   0.5 mol  
  c.   1.0 mol  
  d.   2.0 mol  
  15.Analysis of a covalent compound showed that it contained 14.4% hydrogen and 85.6% carbon by mass. What is the empirical formula for this compound?  
  a.   CH2  
  b.   C2 H3  
  c.   CH2  
  d.   CH  
  16.What is the mass of one mole of carbon-12 atoms?  
  a.   12 grams  
  b.   6 grams  
  c.   6 amu  
  d.   12 amu  
  17.What is the SI base unit used to measure the amount of a substance?  
  a.   mole  
  b.   kilogram  
  c.   kelvin  
  d.   meter  
  18.What is the molar mass of H2CrO4?  
  a.   2 g  
  b.   52 g  
  c.   118 g  
  d.   64 g  
  19.What mass of calcium metal could be obtained from 1 kg of limestone that is 50.0% pure CaCO3?  
  a.   0.5 kg  
  b.   0.2 kg  
  c.   0.05 kg  
  d.   0.4 kg  
  20.An empirical formula mass is found to be 17 g/mol. The molar mass is found to be 34 g/mol. What is the number of empirical formula units in this molar mass?  
  a.   0.5 unit  
  b.   1 unit  
  c.   2 units  
  d.   17 units  

McGraw-Hill / Glencoe
The McGraw-Hill Companies