The discussion focuses on calculating the molality of an aqueous solution containing 1g/L of a protein with a molar mass of 90,000 g/mol, given that the solution's density is 1 g/cm³. Participants clarify that molality is defined as moles of solute per kilogram of solvent. To find the kilograms of solvent, it is assumed that adding 1g of protein to 1L of water does not alter the solution's volume. This leads to the conclusion that the calculation can proceed without needing to determine the mass of the solvent explicitly.
PREREQUISITESChemistry students, educators, and professionals involved in solution preparation and analysis will benefit from this discussion, particularly those focusing on molality calculations in aqueous solutions.
You may assume that adding a gram of protein to a liter of water does not change its volume (or the density).bomba923 said:My book says molality is moles of solute over kilograms solvent.
My question/problem is how to find the kilograms of solvent