Mole fraction of each compound in mixture that has 15.0 g of cyclohexane and 5.0 g of toluene should be determined. Concept introduction: Concentration can be defined as ratio of amount of solute to that of solvent. Different concentration terms are used for determination of concentration in solution. Some of these are molarity, molality, mole fraction, mass percent and volume percent. Mole fraction is scientific term that is used to describe concentration of solution. It is defined as moles of particular component divided by total number of moles present in solution and is denoted by N X . Mathematical expression of mole fraction is as follows: N X = Moles of component Total number of moles ..................(1)

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b) Certain cyclic compounds are known to be conformationally similar to carbohydrates, although they are not themselves carbohydrates. One example is Compound C shown below, which could be imagined as adopting four possible conformations. In reality, however, only one of these is particularly stable. Circle the conformation you expect to be the most stable, and provide an explanation to justify your choice. For your explanation to be both convincing and correct, it must contain not only words, but also "cartoon" orbital drawings contrasting the four structures. Compound C Possible conformations (circle one): Дет

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Chapter 4.4, Problem 9E

Interpretation Introduction

Interpretation:Mole fraction of each compound in mixture that has 15.0 g of cyclohexane and 5.0 g of toluene should be determined.

Concept introduction:Concentration can be defined as ratio of amount of solute to that of solvent. Different concentration terms are used for determination of concentration in solution. Some of these are molarity, molality, mole fraction, mass percent and volume percent.

Mole fraction is scientific term that is used to describe concentration of solution. It is defined as moles of particular component divided by total number of moles present in solution and is denoted by NX . Mathematical expression of mole fraction is as follows:

NX=Moles of componentTotal number of moles ..................(1)

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b) Certain cyclic compounds are known to be conformationally similar to carbohydrates, although they are not themselves carbohydrates. One example is Compound C shown below, which could be imagined as adopting four possible conformations. In reality, however, only one of these is particularly stable. Circle the conformation you expect to be the most stable, and provide an explanation to justify your choice. For your explanation to be both convincing and correct, it must contain not only words, but also "cartoon" orbital drawings contrasting the four structures. Compound C Possible conformations (circle one): Дет

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