Question

Given that 0.25 mols was dissolved in water to create a 0.125 m solution, what is the mass of water in grams expressed in scientific notation? I have no idea how to go about answering this question..

Answer 1

Molality = moles of solute / m of solvent, kg
Water is a solvent
0.125 m = 0.25 moles / m (H2O)
m (H2O) = 2 kg = 2000 g