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You can create printable tests and worksheets from these Grade 12 Stoichiometry questions! Select one or more questions using the checkboxes above each question. Then click the add selected questions to a test button before moving to another page.

If $W_2$ is the weight of solute in grams or Kgs and $W_1$ 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) = $(W_2)/(W_1 + W_2) xx 10^6$
2. Parts per million (ppm) = $[(W_1 + W_2)/W_1] xx 10^-3$
3. Parts per million (ppm) = $(W_1)/(W_1+W_2) + 10^2$
4. parts per million (ppm) = $(W_2)/ (W_1 -W_2) xx 10^5$
If W kg of solute is dissolved in V m$^^3$ of solution, the molarity (M) can be expressed as
1. $(W/V) = Molarity xx Mol. wt. of solute$
2. $Wxx V = Molarity xx Mol. wt. of solute$
3. $(W/V) = (Molarity) /(Mol. wt. of solute)$
4. $(W+V) = Molarity xx Mol. wt. of solute$