Final answer:
To determine the mass of the solute in a given volume of a solution, use the formula: Mass of Solute = Volume of Solution x Molarity of Solution x Molar Mass of Solute. In this case, the mass of solute in 250.0 mL of a 0.454 M solution of LiNO3 is 10.85 g.
Step-by-step explanation:
To determine the mass of solute in a given volume of solution, we can follow the formula:
Mass of Solute = Volume of Solution (in L) x Molarity of Solution x Molar Mass of Solute
In this case, the given volume of solution is 250.0 mL, which is equivalent to 0.250 L. The molarity of the solution is 0.454 M. The molar mass of LiNO3 is 85.0 g/mol. Plugging these values into the formula:
Mass of Solute = 0.250 L x 0.454 M x 85.0 g/mol = 10.85 g