Non-Calculator Percentages Exam Questions
Mole fraction (X) = number of moles of component. Total number of moles. Example: A solution is prepared by adding 5.84 grams of formaldehyde, H2CO, to 100.0 grams of water. The final volume of the solution was 104.0 mL. Calculate the molarity, molality, mass percent and mole fraction of the formaldehyde in the solution. Molarity = Molality ... ................
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