Podcast
Questions and Answers
How can the accumulation of moisture or fingerprints on the vessel affect analytical results?
How can the accumulation of moisture or fingerprints on the vessel affect analytical results?
It can add a small mass to the sample, introducing errors in mass measurements.
Why is it important to know the mass of the vessel when weighing the final dried or ashed sample?
Why is it important to know the mass of the vessel when weighing the final dried or ashed sample?
To subtract it from the final mass to get the mass of the dried sample or ash.
What precautions should be taken when using weighing vessels for precise measurements?
What precautions should be taken when using weighing vessels for precise measurements?
Weighing vessels should be pre-dried, handled with care, and stored in a desiccator.
How can air currents or leaning on the bench affect the accuracy of analytical balances?
How can air currents or leaning on the bench affect the accuracy of analytical balances?
Signup and view all the answers
What type of balances are commonly used in modern laboratories?
What type of balances are commonly used in modern laboratories?
Signup and view all the answers
What type of glassware is recommended for storing strong mineral acids and organic solvents?
What type of glassware is recommended for storing strong mineral acids and organic solvents?
Signup and view all the answers
Why should dilute metal standard solutions be prepared fresh at the time of analysis?
Why should dilute metal standard solutions be prepared fresh at the time of analysis?
Signup and view all the answers
Which type of glassware is usually used for storing standard solutions of silica, boron, and alkali metals?
Which type of glassware is usually used for storing standard solutions of silica, boron, and alkali metals?
Signup and view all the answers
What can happen when certain solvents dissolve plastics used for pipette tips and serological pipettes?
What can happen when certain solvents dissolve plastics used for pipette tips and serological pipettes?
Signup and view all the answers
Why should care be taken when using ground-glass stoppers with bases?
Why should care be taken when using ground-glass stoppers with bases?
Signup and view all the answers
