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Stoichiometry Questions - All Grades

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Grade 11 Stoichiometry
What percent of aluminum chloride is aluminum?
  1. 20.2%
  2. 43.2%
  3. 27.6%
  4. 52.3%
Grade 10 Stoichiometry
How many atoms are in 3 moles of H2O?
  1. 18 atoms
  2. 6.02×1023 atoms
  3. 1.8×1024 atoms
  4. 1800 atoms
Grade 11 Stoichiometry
What percent of dinitrogen monoxide is nitrogen?
  1. 15.9%
  2. 31.8%
  3. 63.6%
  4. 36.4%
Grade 10 Stoichiometry
How many moles are in 1.2×103 grams of ammonia, NH3?
  1. 126.0 moles
  2. 70.6 moles
  3. 95.3 moles
  4. 1200 moles
Grade 10 Stoichiometry
How many grams are in 0.02 moles of beryllium iodide, BeI2?
  1. 0.02 grams
  2. 5.2 grams
  3. 2.63 grams
  4. 263 grams
Grade 11 Stoichiometry
What percent of calcium oxide is calcium?
  1. 57.8%
  2. 28.6%
  3. 71.4%
  4. 35.7%
Grade 10 Stoichiometry
Given 3.3 moles of potassium sulfide, K2S, how many grams of potassium sulfide is available?
  1. 364.0 grams
  2. 131.97 grams
  3. 33.40 grams
  4. 110.24 grams
Grade 11 Stoichiometry
In which of the following compounds is the percent composition of silver equivalent to 75.3%?
  1. silver nitrate
  2. silver chloride
  3. silver acetate
  4. silver fluoride
Grade 11 Stoichiometry
What percent of lithium chloride is lithium?
  1. 33.0%
  2. 49.5%
  3. 16.5%
  4. None of the above
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