What is the mole fraction of the solute in a 1.00 molal aqueous solution?

0.0354

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0.0177

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0.177

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1.77

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Solution

The correct option is B 0.0177
1 m solution - 1 mol solute in 1000 g solvent.
moles of solvent (water) = 1000/18 = 55.55 mol

mole fraction of solute = 1/(55.55 + 1) = 0.0177

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