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1- Pentane and water can be separated by using separating funnel because A-pentane has lower density than water. B-pentape and water have different boiling points. C- pentane is heavier than water. Depentane is immiscible with water 2-Liquids that do NOT mix are said to be a) Immiscible b) Flammable c) Miscible d) soluble 3- A process quicker than filtration but not so effective(less efficient than filtration) is Adecanting B centrifuging C. crystallization D. fractional distillation

1- Pentane and water can be separated by using separating funnel because A-pentane has lower density than water. B-pentape and water have different boiling points. C- pentane is heavier than water. Depentane is immiscible with water 2-Liquids that do NOT mix are said to be a) Immiscible b) Flammable c) Miscible d) soluble 3- A process quicker than filtration but not so effective(less efficient than filtration) is Adecanting B centrifuging C. crystallization D. fractional distillation

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Student's Name: Answer all the parts of questions Part I: Multiple choice questions Circle the best answer for each of the following questions 1- Pentane and water can be separated by using separating funnel because A-pentane has lower density than water. B-pentape and water have different boiling points. C- pentane is heavier than water. Depentane is immiscible with water 2-Liquids that do NOT mix are said to be a) Immiscible) b) Flammable c) Miscible d) soluble 3- A process quicker than filtration but not so effective(less efficient than filtration) is Adecanting B centrifuging C. crystallization D. fractional distillation 4- Which of the following methods can be used to obtain pure sugar from a saturated sug aqueous solution? A. Decantation ByCrystallization C. Chromatography D. Filtration 5- Fractional distillation can be used to separate Aethanol and butanol. B calcium sulphate( CaSO4) and table salt. C. water and hexane. D. Ferric oxide and water. 6-Separation methods are mainly based on... A- The attractive forces between particles (B) Differences in physical properties of components C-Similarities in physical properties of components D-Similarities in chemical composition of components 16/10/2019 3
Transcribed Image Text:Student's Name: Answer all the parts of questions Part I: Multiple choice questions Circle the best answer for each of the following questions 1- Pentane and water can be separated by using separating funnel because A-pentane has lower density than water. B-pentape and water have different boiling points. C- pentane is heavier than water. Depentane is immiscible with water 2-Liquids that do NOT mix are said to be a) Immiscible) b) Flammable c) Miscible d) soluble 3- A process quicker than filtration but not so effective(less efficient than filtration) is Adecanting B centrifuging C. crystallization D. fractional distillation 4- Which of the following methods can be used to obtain pure sugar from a saturated sug aqueous solution? A. Decantation ByCrystallization C. Chromatography D. Filtration 5- Fractional distillation can be used to separate Aethanol and butanol. B calcium sulphate( CaSO4) and table salt. C. water and hexane. D. Ferric oxide and water. 6-Separation methods are mainly based on... A- The attractive forces between particles (B) Differences in physical properties of components C-Similarities in physical properties of components D-Similarities in chemical composition of components 16/10/2019 3
Student's Name: L 7- It is a specific reagent used to convert the solid silica (SiO₂) to volatile species, what is A. HNO, B. HCIO, C. HF D. HCL 8- Evaporation is used to separate liquids of different boiling points B. separate solids of different particle size C. separate the dyes in a marker obtain the solute from the solution 9- Consider the sequence of the following compounds Benzene, methylbenzene, ethybenzene, propylbenzene, butylbenzene By going from benzene to butylbenzene AKow increases B. Kow decreases C. No trends in Kow values D. Kow constant 10- At constant rotor speed of centrifuge machine, the most important factor that affec separation of various species is A Viscosity of the medium B. Density of analyte C. Size of analyte D. Shape of the analyte /2019
Transcribed Image Text:Student's Name: L 7- It is a specific reagent used to convert the solid silica (SiO₂) to volatile species, what is A. HNO, B. HCIO, C. HF D. HCL 8- Evaporation is used to separate liquids of different boiling points B. separate solids of different particle size C. separate the dyes in a marker obtain the solute from the solution 9- Consider the sequence of the following compounds Benzene, methylbenzene, ethybenzene, propylbenzene, butylbenzene By going from benzene to butylbenzene AKow increases B. Kow decreases C. No trends in Kow values D. Kow constant 10- At constant rotor speed of centrifuge machine, the most important factor that affec separation of various species is A Viscosity of the medium B. Density of analyte C. Size of analyte D. Shape of the analyte /2019
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