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Twelfth Grade (Grade 12) Stoichiometry Questions

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Grade 12 Stoichiometry
If W2 is the weight of solute in grams or Kgs and W1 is the weight of solvent in grams or kgs, then what is the concentration of such a solution in parts per million (ppm)?
  1. Parts per million (ppm) = W2W1+W2×106
  2. Parts per million (ppm) = [W1+W2W1]×10-3
  3. Parts per million (ppm) = W1W1+W2+102
  4. parts per million (ppm) = W2W1-W2×105
Grade 12 Stoichiometry
If W kg of solute is dissolved in V m3 of solution, the molarity (M) can be expressed how?
  1. (WV)=Molarity×Mol.wt.ofsolute
  2. W×V=Molarity×Mol.wt.ofsolute
  3. (WV)=MolarityMol.wt.ofsolute
  4. (W+V)=Molarity×Mol.wt.ofsolute