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1.1) What is a balance used for ? 1.2) What are the four major type of balances us sused ? 1.3) Why when using a container to weigh your compound you will want to use the smallest possible one ? 1.4) What are the factors determining the accuracy of your measurement ? 1.5) List the most important guidelines to perform an accurate determination of weigh 1.6) List the precautions to be taken to keep a balance functioning correctly 1.7) Define "drift" when using a balance. 1.8) What is the most accurate reading when weighing a solid ? 1.9) What is the melting point useful for ? 1.10) Define melting point 1.11) Does the term melting point refers to an exact temperature or to a range ? 1.12) Why cant large crystal be used for melting point determination ? 1.13) When should you start recording the temperature ? 1.14) When using melting point to assess purity, how would you know that your sample is impure ? 1.15) When looking at melting point data reported in books, a single number is given, does it refer to the upper or the lower temperature of the range ? 1.16) List the reasons why you may be obtaining innacurate melting point readings. 1.17) What are the main guidelines to follow in order to ensure accurate determination of a melting point ? 1.18) List all the parts needed to carry a reaction under reflux. 1.19) What is a good refluxing solvent ? 1.20) Define bumping 1.21) What is the disadvantage of using a very small heating mantle for refluxing ? 1.22) In a refluxing reaction, before heating, should the system be open or closed ? Explain why. 1.23) How would you know if you are heating the solution too much in a reaction under reflux ?

1.1) What is a balance used for ? 1.2) What are the four major type of balances us sused ? 1.3) Why when using a container to weigh your compound you will want to use the smallest possible one ? 1.4) What are the factors determining the accuracy of your measurement ? 1.5) List the most important guidelines to perform an accurate determination of weigh 1.6) List the precautions to be taken to keep a balance functioning correctly 1.7) Define "drift" when using a balance. 1.8) What is the most accurate reading when weighing a solid ? 1.9) What is the melting point useful for ? 1.10) Define melting point 1.11) Does the term melting point refers to an exact temperature or to a range ? 1.12) Why cant large crystal be used for melting point determination ? 1.13) When should you start recording the temperature ? 1.14) When using melting point to assess purity, how would you know that your sample is impure ? 1.15) When looking at melting point data reported in books, a single number is given, does it refer to the upper or the lower temperature of the range ? 1.16) List the reasons why you may be obtaining innacurate melting point readings. 1.17) What are the main guidelines to follow in order to ensure accurate determination of a melting point ? 1.18) List all the parts needed to carry a reaction under reflux. 1.19) What is a good refluxing solvent ? 1.20) Define bumping 1.21) What is the disadvantage of using a very small heating mantle for refluxing ? 1.22) In a refluxing reaction, before heating, should the system be open or closed ? Explain why. 1.23) How would you know if you are heating the solution too much in a reaction under reflux ?

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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Please answer, (1.17 1.18 1.21 1.22 and 1.23 please).

1.1) What is a balance used for ? 1.2) What are the four major type of balances us sused ? 1.3) Why when using a container to weigh your compound you will want to use the smallest possible one ? 1.4) What are the factors determining the accuracy of your measurement ? 1.5) List the most important guidelines to perform an accurate determination of weigh 1.6) List the precautions to be taken to keep a balance functioning correctly 1.7) Define "drift" when using a balance. 1.8) What is the most accurate reading when weighing a solid ? 1.9) What is the melting point useful for ? 1.10) Define melting point 1.11) Does the term melting point refers to an exact temperature or to a range ? 1.12) Why cant large crystal be used for melting point determination ? 1.13) When should you start recording the temperature ? 1.14) When using melting point to assess purity, how would you know that your sample is impure ? 1.15) When looking at melting point data reported in books, a single number is given, does it refer to the upper or the lower temperature of the range ? 1.16) List the reasons why you may be obtaining innacurate melting point readings. 1.17) What are the main guidelines to follow in order to ensure accurate determination of a melting point ? 1.18) List all the parts needed to carry a reaction under reflux. 1.19) What is a good refluxing solvent ? 1.20) Define bumping 1.21) What is the disadvantage of using a very small heating mantle for refluxing ? 1.22) In a refluxing reaction, before heating, should the system be open or closed ? Explain why. 1.23) How would you know if you are heating the solution too much in a reaction under reflux ?
Transcribed Image Text:1.1) What is a balance used for ? 1.2) What are the four major type of balances us sused ? 1.3) Why when using a container to weigh your compound you will want to use the smallest possible one ? 1.4) What are the factors determining the accuracy of your measurement ? 1.5) List the most important guidelines to perform an accurate determination of weigh 1.6) List the precautions to be taken to keep a balance functioning correctly 1.7) Define "drift" when using a balance. 1.8) What is the most accurate reading when weighing a solid ? 1.9) What is the melting point useful for ? 1.10) Define melting point 1.11) Does the term melting point refers to an exact temperature or to a range ? 1.12) Why cant large crystal be used for melting point determination ? 1.13) When should you start recording the temperature ? 1.14) When using melting point to assess purity, how would you know that your sample is impure ? 1.15) When looking at melting point data reported in books, a single number is given, does it refer to the upper or the lower temperature of the range ? 1.16) List the reasons why you may be obtaining innacurate melting point readings. 1.17) What are the main guidelines to follow in order to ensure accurate determination of a melting point ? 1.18) List all the parts needed to carry a reaction under reflux. 1.19) What is a good refluxing solvent ? 1.20) Define bumping 1.21) What is the disadvantage of using a very small heating mantle for refluxing ? 1.22) In a refluxing reaction, before heating, should the system be open or closed ? Explain why. 1.23) How would you know if you are heating the solution too much in a reaction under reflux ?
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