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  1. 3 天前 · Santa Fe (/ˌsæntə ˈfeɪ, ˈsæntə feɪ/ SAN-tə FAY, -⁠ fay; Spanish: [santaˈfe]) is the capital of the U.S. state of New Mexico. With a population of 87,505 at the 2020 census, it is the fourth-most populous city in the state.[5] It is also the county seat of Santa Fe County. Its metropolitan area is part of the Albuquerque–Santa Fe ...

    • 6,998 ft (2,133 m)
    • Santa Fe
  2. en.wikipedia.org › wiki › ChloroformChloroform - Wikipedia

    3 天前 · Chloroform,[10] or trichloromethane (often abbreviated as TCM), is an organic compound with the formula CHCl3 and a common solvent. It is a very volatile, colorless, strong-smelling, dense liquid produced on a large scale as a precursor to refrigerants and PTFE.[11] Chloroform is a trihalomethane that serves as a powerful anesthetic ...

    • CHCl₃
    • 119.37 g·mol−1
    • −63.5 °C (−82.3 °F; 209.7 K)
    • 10.62 g/L (0 °C), 8.09 g/L (20 °C), 7.32 g/L (60 °C)
  3. 2024年5月3日 · Hydrogen peroxide (H 2 O 2) is a nonplanar molecule with (twisted) C 2 symmetry; this was first shown by Paul-Antoine Giguère in 1950 using infrared spectroscopy.Although the O−O bond is a single bond, the molecule has a relatively high rotational barrier of 386 cm −1 (4.62 kJ/mol) for rotation between enantiomers via the trans configuration, and 2460 cm −1 (29.4 kJ/mol) via the cis ...

  4. en.wikipedia.org › wiki › NitrogenNitrogen - Wikipedia

    2024年5月3日 · Nitrogen is a nonmetal and the lightest member of group 15 of the periodic table, often called the pnictogens. It is a common element in the universe, estimated at seventh in total abundance in the Milky Way and the Solar System. At standard temperature and pressure, two atoms of the element bond to form N 2, a colorless and odorless diatomic gas.

  5. 1 天前 · On 11 November 1937, the Bf 109 V13, D-IPKY flown by Messerschmitt's chief pilot Dr. Hermann Wurster, powered by a 1,230 kW (1,672 PS; 1,649 hp) DB 601R racing engine, set a new world air speed record for landplanes with piston engines of 610.95 km/h (379.63 mph), winning the title for Germany for the first time.

  6. en.wikipedia.org › wiki › CopperCopper - Wikipedia

    2024年5月4日 · Copper is a chemical element; it has symbol Cu (from Latin cuprum) and atomic number 29. It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. A freshly exposed surface of pure copper has a pinkish-orange color. Copper is used as a conductor of heat and electricity, as a building material, and as a ...

  7. en.wikipedia.org › wiki › MaldivesMaldives - Wikipedia

    2 天前 · The Maldives, [c] officially the Republic of Maldives, [d] and historically known as Maldive Islands, is a country and archipelagic state in South Asia in the Indian Ocean. [9] The Maldives is named after the main island and capital, Malé. The Maldives is southwest of Sri Lanka and India, about 750 kilometres (470 miles; 400 nautical miles ...

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