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- https://chem.libretexts.org/Courses/Lakehead_University/Analytical_I/2%3A_Basic_Tools_of_Analytical_Chemistry/2.7%3A_The_Laboratory_NotebookYour laboratory notebook is your most important tool when working in the lab. If kept properly, you should be able to look back at your laboratory notebook several years from now and reconstruct the e...Your laboratory notebook is your most important tool when working in the lab. If kept properly, you should be able to look back at your laboratory notebook several years from now and reconstruct the experiments on which you worked. Maintaining a laboratory notebook may seem like a great deal of effort, but if you do it well you will have a permanent record of your work. Scientists working in academic, industrial and governmental research labs rely on their notebooks to provide a written record.
- https://chem.libretexts.org/Courses/Los_Angeles_Trade_Technical_College/Analytical_Chemistry/2%3A_Analytical_Chemistry_2.0_(Harvey)/03%3A_Basic_Tools_of_Analytical_Chemistry/3.7%3A_The_Laboratory_NotebookYour laboratory notebook is your most important tool when working in the lab. If kept properly, you should be able to look back at your laboratory notebook several years from now and reconstruct the e...Your laboratory notebook is your most important tool when working in the lab. If kept properly, you should be able to look back at your laboratory notebook several years from now and reconstruct the experiments on which you worked. Maintaining a laboratory notebook may seem like a great deal of effort, but if you do it well you will have a permanent record of your work. Scientists working in academic, industrial and governmental research labs rely on their notebooks to provide a written record.
- https://chem.libretexts.org/Bookshelves/Analytical_Chemistry/Analytical_Chemistry_2.1_(Harvey)/03%3A__The_Vocabulary_of_Analytical_Chemistry/3.06%3A_ProtocolsA protocol is a set of stringent written guidelines crucial for agency approval of analytical results. It includes procedures for internal and external QA/QC to ensure accuracy. The EPA's protocol for...A protocol is a set of stringent written guidelines crucial for agency approval of analytical results. It includes procedures for internal and external QA/QC to ensure accuracy. The EPA's protocol for trace metal analysis using atomic absorption spectroscopy involves calibration with a method blank and three standards. Calibration is verified through ICV and ICB samples, needing results within ??10% accuracy.
- https://chem.libretexts.org/Bookshelves/Introductory_Chemistry/Introductory_Chemistry_(CK-12)/16%3A_Solutions/16.16%3A_Calculating_Molar_MassThis page explains how antifreeze in a radiator prevents engine freezing and discusses determining the molar mass of an unknown solute via freezing point depression. By measuring the freezing point ch...This page explains how antifreeze in a radiator prevents engine freezing and discusses determining the molar mass of an unknown solute via freezing point depression. By measuring the freezing point change after dissolving a known mass of solute, one can calculate molality and moles of solute, leading to a calculated molar mass of 59.7 g/mol in an example.
- https://chem.libretexts.org/Bookshelves/Introductory_Chemistry/Introductory_Chemistry_(CK-12)/21%3A_Acids_and_Bases/21.17%3A_Titration_ExperimentThis page discusses current biodiesel research that emphasizes the use of used vegetable oils, highlighting the necessity for acid content assessment prior to lye addition for biofuel production. It e...This page discusses current biodiesel research that emphasizes the use of used vegetable oils, highlighting the necessity for acid content assessment prior to lye addition for biofuel production. It explains the titration method employed to measure free acid levels, involving neutralization reactions and indicators like phenolphthalein to indicate completion. The equivalence point is reached when acid and base moles are equal, indicated by a color change in the solution.
- https://chem.libretexts.org/Bookshelves/Introductory_Chemistry/Introductory_Chemistry_(CK-12)/16%3A_Solutions/16.08%3A_MolarityThis page explains molarity as a concentration measure in solutions, defined as moles of solute per liter of solution. It contrasts molarity with percent solutions, which measure mass instead of molec...This page explains molarity as a concentration measure in solutions, defined as moles of solute per liter of solution. It contrasts molarity with percent solutions, which measure mass instead of molecular quantity. The text includes examples for calculating molarity and finding the mass of solute required for specific concentrations, underscoring the importance of accurate measurements in laboratory settings.
