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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Give the major organic product(s) of the following reactions or sequences of reactions. Show all relevant stereochemistry a. H MgBr 1. ether 2. H₂O* 4 COH b. 1. LIAIH, ether 2. H₂O Choose the best reagent(s) for carrying out the following conversions from the list provided below. Place the letter of the best choice in the blank to the left of the conversion. Reagents may be used more than once. a. 1. CH3MgBr, ether 2. H3O+ NaOH b. 1. PBr3 2. C. 2. 1. (CH3)3SiCl, (CH3CH2)3N CH3MgBr, ether 3. H₂O*+ 2. H3O+ e. 1. p-TosCl, pyridine f. نها g. 2. NaOH CrO3, H₂SO4, H₂O 1. NaBH4, ethanol 2. H30* h. PCC, CH2Cl2 Ovoldo-6 a. b. OH OH H OH O any organic

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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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