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01287_Ions in Solution (P1).txt
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1995-12-08
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Consider 20g NaCl dissolved in
What is the mole fraction of the sodium chloride?
A. .5
B. .342
C. .058
D. .942
C
The mole fraction of NaCl is the number of moles of sodium chloride divided by the total number of moles present. First, it is necessary to convert the measurements in grams to measurements in moles. The mole fraction can then be calculated.