ffaarraahh22151 ffaarraahh22151 26-04-2024 Chemistry Answered A 15. 00 % by mass solution of lactose (C₁₂H₂₂O₁₁, 342. 30 g/mol) in water has a density of 1. 0602 g/ mL at 20°C. What is the molarity of this solution?