Concentrations: molality and molar fraction

Tutorial 3

    

Use this schematic "lattice" and →    définitions 1 or →    définitions 2 to resolve the following exercise:

Exercise $ 3\; kg$ of an aqueous ammonia solution contain $ 170 \;g $ of $NH_3$ . Calculate the molality of $NH_3$ ! Solution (Click): Scheme and formulas: .......... Calculation: ..........