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Hydrogen peroxide ( H2O2) is a nonplanar molecule with (twisted) C 2 symmetry; this was first shown by Paul-Antoine Giguère in 1950 using infrared spectroscopy. [9] [10] 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 ...
Unemployed people lined up outside a soup kitchen in Chicago. The Great Depression (1929–1939) was a severe global economic downturn that affected many countries across the world. It became evident after a sharp decline in stock prices in the United States, leading to a period of economic depression. [1] The economic contagion began around ...
Yandex LLC (Russian: Яндекс, romanized: Yandeks, IPA:) is a Russian multinational technology company providing Internet-related products and services, including an Internet search engine called Yandex Search, launched in 1997, information services, e-commerce, transportation, maps and navigation, mobile applications, and online advertising.
Comcast Corporation (simply known as Comcast, and formerly known as American Cable Systems and Comcast Holdings ), [note 1] incorporated and headquartered in Philadelphia, is an American multinational telecommunications and media conglomerate. [8] The corporation is the second-largest broadcasting and cable television company in the world by ...
Nike, Inc. Nike, Inc. [note 1] (stylized as NIKE) is an American athletic footwear and apparel corporation headquartered near Beaverton, Oregon, United States. [5] It is the world's largest supplier of athletic shoes and apparel and a major manufacturer of sports equipment, with revenue in excess of US$46 billion in its fiscal year 2022.
The Census Bureau reported that minorities (including Hispanic whites) made up 50.4% of the children born in the U.S. between July 2010 and July 2011, compared to 37% in 1990. [126] In 2014, the state with the lowest fertility rate was Rhode Island, with a rate of 1.56, while Utah had the greatest rate with a rate of 2.33. [63]
Physical properties. Pure sodium hydroxide is a colorless crystalline solid that melts at 318 °C (604 °F) without decomposition and boils at 1,388 °C (2,530 °F). It is highly soluble in water, with a lower solubility in polar solvents such as ethanol and methanol. [14] Sodium hydroxide is insoluble in ether and other non-polar solvents.
Oxfam found that in 2023 the wealthiest 10% of people were responsible for 50% of global emissions, while the bottom 50% were responsible for just 8%. Production of emissions is another way to look at responsibility: under that approach, the top 21 fossil fuel companies would owe cumulative climate reparations of $5.4 trillion over the period ...
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