<p>The mole fraction of a solute in a solution is 0.1. At 298 K, molarity of this solution is the same as its molality. Density of this solution at 298 K is 2.0g&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>c</mi><msup><mi>m</mi><mrow><mo>-</mo><mn>3</mn></mrow></msup></math>. The ratio of the molecular weights of the solute and solvent,&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mfenced><mfrac><mrow><mi>M</mi><msub><mi>W</mi><mrow><mi>s</mi><mi>o</mi><mi>l</mi><mi>u</mi><mi>t</mi><mi>e</mi></mrow></msub></mrow><mrow><mi>M</mi><msub><mi>W</mi><mrow><mi>s</mi><mi>o</mi><mi>l</mi><mi>v</mi><mi>e</mi><mi>n</mi><mi>t</mi></mrow></msub></mrow></mfrac></mfenced><mo>&#160;</mo><mi>i</mi><mi>s</mi><mo>:</mo></math></p>