The molecular weight of a compound whose molal concentration is 0.0698 m has to be determined. Concept Introduction: Molality or molal concentration is one of the many parameters that is used to express concentration of a solution . It is expressed as, Molality = n u m b e r of m o l e s o f solute m a s s of solvent in kg

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Recent advancements in liquid chromatography include the development of ultrahigh pressure liquid chromatography (UHPLC) and an increased use of capillary columns that had previously only been used with gas chromatography. Both of these advances have made the development of portable LC systems possible. For example, Axcend Corp. makes a portable system that uses a capillary column with an internal diameter of 150-μm-that is packed with 1.7-um stationary phase particles. In contrast, a traditional LC column has a 4.6 mm internal diameter and utilizes 5-um stationary phase particles. a) Explain one advantage that is afforded by the use of a capillary column in liquid chromatographic separation. Explain one disadvantage of capillary columns. b) Explain how the use of smaller stationary phase particles can improve the resolution of a separation. Include any relevant equations that support your explanation. c) A scientist at Rowan University is using the Axcend LC to conduct analyses of F…

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Chapter 12, Problem 12.73QP

Interpretation Introduction

Interpretation:

The molecular weight of a compound whose molal concentration is 0.0698 m has to be determined.

Concept Introduction:

Molality or molal concentration is one of the many parameters that is used to express concentration of a solution. It is expressed as,

Molality = number of moles of solutemass of solvent in kg

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