Below Is a Diagram Representing a Solvent A(l) in a 1-L

Multiple Choice

Below is a diagram representing a solvent A(l) in a 1-L beaker, and a solute X dissolved in the solvent. Solvent A has a density of 0.8 g/mL, and a molar mass of 40 g/mol. Solute X has a molar mass of 30 g/mol. Each circle of X represents 1 mol of X. Assume that the solute addition does not significantly change the volume of liquid in the beaker. What is the mole fraction of the solute X in this solution?

A) 0.67
B) 0.53
C) 0.27
D) 0.21
E) 0.04