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bomba923
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How do I find the molality of an aqueous solution containing 1g/L of a certain protein with molar mass 9.0 x 10^4 g/mol if the density of the solution is 1g/(cm^3)??
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
Molality is a measure of a solution's concentration, defined as the number of moles of solute per kilogram of solvent.
Molality is different from molarity in that it takes into account the mass of the solvent, rather than the volume. This makes it a more accurate measure of concentration for solutions with varying densities.
The molality of a solution can be calculated by dividing the moles of solute by the mass of the solvent in kilograms.
The equation for calculating molality is: molality = (moles of solute)/(mass of solvent in kg).
Molality is important in scientific research because it is a more accurate measure of concentration for solutions with varying densities. It is also used in various calculations, such as determining freezing point depression and boiling point elevation, and in understanding the behavior of solutions in different conditions.