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Stoichiometry Questions - All Grades

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Grade 11 Stoichiometry
Which of the following represents a correct chemical formula for copper (II) nitrate?
  1. [math]Cu_2NO_3[/math]
  2. [math]Cu(NO_3)_2[/math]
  3. [math]Cu_3N_2[/math]
  4. [math]CuN[/math]
Grade 10 Stoichiometry
The mole is based on
  1. speed of light.
  2. Planck's constant.
  3. pi.
  4. Avogadro's number.
Grade 10 Stoichiometry
Why is the mole important?
  1. It gives us a convenient way to express large numbers.
  2. It is useful when converting between grams and atoms or molecules.
  3. It can be applied to any type of object: molecules, atoms, ions, etc.
  4. All of the above.
Grade 11 Stoichiometry
Grade 10 Stoichiometry
How many moles are in 75.0 grams of nitrogen gas, [math]N_2[/math]?
  1. 3.00 moles
  2. 0.333 moles
  3. 2.68 moles
  4. 4.52 moles
Grade 11 Stoichiometry
Grade 11 Stoichiometry
Grade 11 Stoichiometry
Grade 10 Stoichiometry
In the reaction [math]A + B rarr C + D[/math], if element B is in excess, then
  1. element A is the limiting reactant.
  2. element B is the limiting reactant.
  3. element C is the limiting reactant.
  4. element D is the limiting reactant.
Grade 11 Stoichiometry
The unit "grams" is used in which conversions?
  1. mass to mole, mole to mass
  2. volume to mole, mole to volume
  3. atoms to mole, mole to atoms
  4. volume to atoms, atoms to volume
Grade 11 Stoichiometry
What do you use to convert from moles to atoms and atoms to mole?
  1. Avocado's number
  2. Avogadro's number
  3. Lui's number
  4. Segall's number
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