The molality of NH 4 Cl in the given saturated aqueous solution needs to be determined. Concept introduction: The molality of a given solution refers to the number of moles of solute present in one kilogram of the solvent. It is denoted by the symbol ‘m’. Here, the number of moles refers to the ratio of mass of the solute to its molar mass.

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In addition to the separation techniques used in this lab (magnetism, evaporation, and filtering), there are other commonly used separation techniques. Some of these techniques are:Distillation – this process is used to separate components that have significantly different boiling points. The solution is heated and the lower boiling point substance is vaporized first. The vapor can be collected and condensed and the component recovered as a pure liquid. If the temperature of the mixture is then raised, the next higher boiling component will come off and be collected. Eventually only non-volatile components will be left in the original solution.Centrifugation – a centrifuge will separate mixtures based on their mass. The mixture is placed in a centrifuge tube which is then spun at a high speed. Heavier components will settle at the bottom of the tube while lighter components will be at the top. This is the technique used to separate red blood cells from blood plasma.Sieving – this is…

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Question

Chapter 14, Problem 39E

Interpretation Introduction

Interpretation:

The molality of NH₄Cl in the given saturated aqueous solution needs to be determined.

Concept introduction:

The molality of a given solution refers to the number of moles of solute present in one kilogram of the solvent. It is denoted by the symbol ‘m’. Here, the number of moles refers to the ratio of mass of the solute to its molar mass.

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In addition to the separation techniques used in this lab (magnetism, evaporation, and filtering), there are other commonly used separation techniques. Some of these techniques are:Distillation – this process is used to separate components that have significantly different boiling points. The solution is heated and the lower boiling point substance is vaporized first. The vapor can be collected and condensed and the component recovered as a pure liquid. If the temperature of the mixture is then raised, the next higher boiling component will come off and be collected. Eventually only non-volatile components will be left in the original solution.Centrifugation – a centrifuge will separate mixtures based on their mass. The mixture is placed in a centrifuge tube which is then spun at a high speed. Heavier components will settle at the bottom of the tube while lighter components will be at the top. This is the technique used to separate red blood cells from blood plasma.Sieving – this is…

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