A solution is prepared by dissolving 3.05 g of benzoic acid (relative molecular mass 122.0) in 23.0 g of ethanol (relative molecular mass 46.0). What is the mole fraction of benzoic acid in this solution?
4.8×10−24.8 \times 10^{-2}4.8×10−2
5.0×10−25.0 \times 10^{-2}5.0×10−2
1.2×10−11.2 \times 10^{-1}1.2×10−1
9.5×10−19.5 \times 10^{-1}9.5×10−1