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- https://chem.libretexts.org/Courses/Oregon_Institute_of_Technology/OIT_(Lund)%3A_Organic_Chemistry_with_a_Biological_Emphasis_(Soderberg)/05%3A_Structure_Determination_II_-_Nuclear_Magnetic_Resonance_Spectroscopy/5.03%3A_The_1H-NMR_experimentIn an NMR experiment, a sample compound (we'll again use methyl acetate as our example) is placed inside a very strong applied magnetic field ( B0 ) generated by a superconducting magnet in the instru...In an NMR experiment, a sample compound (we'll again use methyl acetate as our example) is placed inside a very strong applied magnetic field ( B0 ) generated by a superconducting magnet in the instrument. (The magnetic fields generated by modern NMR instruments are strong enough that users must take care to avoid carrying any magnetics objects anywhere near them.
- https://chem.libretexts.org/Bookshelves/Organic_Chemistry/Book%3A_Organic_Chemistry_with_a_Biological_Emphasis_v2.0_(Soderberg)/05%3A_Structure_Determination_Part_II_-_Nuclear_Magnetic_Resonance_Spectroscopy/5.04%3A_The_1H-NMR_experimentIn an NMR experiment, a sample compound (we'll again use methyl acetate as our example) is placed inside a very strong applied magnetic field ( B0 ) generated by a superconducting magnet in the instru...In an NMR experiment, a sample compound (we'll again use methyl acetate as our example) is placed inside a very strong applied magnetic field ( B0 ) generated by a superconducting magnet in the instrument. (The magnetic fields generated by modern NMR instruments are strong enough that users must take care to avoid carrying any magnetics objects anywhere near them.
- https://chem.libretexts.org/Courses/SUNY_Oneonta/Organic_Chemistry_with_a_Biological_Emphasis_(SUNY_Oneonta)/05%3A_Structure_Determination_II_-_Nuclear_Magnetic_Resonance_Spectroscopy/5.04%3A_The_1H-NMR_experimentIn an NMR experiment, a sample compound (we'll again use methyl acetate as our example) is placed inside a very strong applied magnetic field ( B0 ) generated by a superconducting magnet in the instru...In an NMR experiment, a sample compound (we'll again use methyl acetate as our example) is placed inside a very strong applied magnetic field ( B0 ) generated by a superconducting magnet in the instrument. (The magnetic fields generated by modern NMR instruments are strong enough that users must take care to avoid carrying any magnetics objects anywhere near them.
- https://chem.libretexts.org/Courses/Lafayette_College/CHEM_212_213%3A_Inorganic_Chemistry_(Nataro)/02%3A_Molecules/2.08%3A_Nuclear_Magnetic_Resonance_(NMR)/2.8.03%3A_The_1H-NMR_experimentThe reason for using a relative value (chemical shift expressed in ppm) rather than the actual resonance frequency (expressed in Hz) is that every NMR instrument will have a different magnetic field s...The reason for using a relative value (chemical shift expressed in ppm) rather than the actual resonance frequency (expressed in Hz) is that every NMR instrument will have a different magnetic field strength, so the actual value of resonance frequencies expressed in Hz will be different on different instruments - remember that ΔE for the magnetic transition of a nucleus depends upon the strength of the externally applied magnetic field.
- https://chem.libretexts.org/Bookshelves/Introductory_Chemistry/Introductory_Chemistry_(CK-12)/25%3A_Organic_Chemistry/25.10%3A_EthersThis page discusses how race car drivers legally enhance speed through methods like efficient gasoline combustion. It notes the phase-out of methyl-t-butyl ether (MTBE) due to contamination issues. Et...This page discusses how race car drivers legally enhance speed through methods like efficient gasoline combustion. It notes the phase-out of methyl-t-butyl ether (MTBE) due to contamination issues. Ethers, organic compounds with an oxygen atom between two hydrocarbon groups, are defined by IUPAC rules, are water-soluble, and have lower boiling points than alcohols due to weaker intermolecular forces. Ethers, once used as anesthetics, are now mainly used as solvents for organic compounds.
- https://chem.libretexts.org/Courses/Oregon_Institute_of_Technology/OIT%3A_CHE_333_-_Organic_Chemistry_III_(Lund)/New_Page/5%3A_Structure_Determination_II_-_Nuclear_Magnetic_Resonance_Spectroscopy/5.3%3A_The_1H-NMR_experimentIn an NMR experiment, a sample compound (we'll again use methyl acetate as our example) is placed inside a very strong applied magnetic field ( B0 ) generated by a superconducting magnet in the instru...In an NMR experiment, a sample compound (we'll again use methyl acetate as our example) is placed inside a very strong applied magnetic field ( B0 ) generated by a superconducting magnet in the instrument. (The magnetic fields generated by modern NMR instruments are strong enough that users must take care to avoid carrying any magnetics objects anywhere near them.
- https://chem.libretexts.org/Bookshelves/Analytical_Chemistry/Analytical_Chemistry_2.1_(Harvey)/05%3A_Standardizing_Analytical_Methods/5.01%3A_Analytical_SignalsThis page discusses the standardization of analytical methods using standards containing known analyte amounts. It emphasizes the importance of reagent and glassware quality. The text explains primary...This page discusses the standardization of analytical methods using standards containing known analyte amounts. It emphasizes the importance of reagent and glassware quality. The text explains primary standards, like K???Cr???O???, and secondary standards, like NaOH, and mentions the role of solvents. It also covers preparing standard solutions through direct transfer or serial dilution, noting potential errors.
- https://chem.libretexts.org/Bookshelves/Analytical_Chemistry/Instrumental_Analysis_(LibreTexts)/29%3A_Supercritical_Fluid_Chromatography/29.01%3A_Properties_of_Supercritical_FluidsA supercritical fluid is a species held at a temperature and a pressure that exceeds its critical point. Under these conditions the species is neither a gas nor a liquid. Some properties of a supercri...A supercritical fluid is a species held at a temperature and a pressure that exceeds its critical point. Under these conditions the species is neither a gas nor a liquid. Some properties of a supercritical fluid are similar to a gas; other properties, however, are similar to a liquid. The viscosity of a supercritical fluid is similar to a gas; THE density of a supercritical fluid, on the other hand, is much closer to that of a liquid, which explains why supercritical fluids are good solvents.
