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Molar concentration or molarity is most commonly expressed in units of moles of solute per litre of solution. [1] For use in broader applications, it is defined as amount of substance of solute per unit volume of solution, or per unit volume available to the species, represented by lowercase : [2]
In cases where the fraction of Romansh or Italian speakers is between 10% and 20%, authorities are obliged as a minimum to offer Romansh or Italian as a subject in primary education. [ 12 ] Notable people
The English Wikipedia reached 4,000,000 registered user accounts on 1 April 2007, [22] over a year since the millionth Wikipedian registered an account in February 2006. [ 23 ] Over 1,100,000 volunteer editors have edited Wikipedia more than 10 times. [ 24 ]
The United States has a racially and ethnically diverse population. [1] At the federal level, race and ethnicity have been categorized separately. The most recent United States census recognized five racial categories (White, Black, Native American/Alaska Native, Asian, and Native Hawaiian/Other Pacific Islander), as well as people who belong to two or more of the racial categories.
The state's population identified as 37.2% Asian; 25.3% Multiracial; 22.9% White; 10.8% Native Hawaiians and other Pacific Islanders; 9.5% Hispanic and Latinos of any race; 1.6% Black or African American; 1.8% from some other race; and 0.3% Native American and Alaskan Native.
Global map of tax revenues as share of GDP in 2022, according to UNU-WIDER [1] Part of a series on: Taxation; An aspect of fiscal policy: Policies. Government revenue;
The diminution in Betelgeuse's apparent size equates to a range of values between 56.0 ± 0.1 mas seen in 1993 to 47.0 ± 0.1 mas seen in 2008—a contraction of almost 0.9 AU in 15 years. [58] The observed contraction is generally believed to be a variation in just a portion of the extended atmosphere around Betelgeuse, and observations at ...
Middle eastern nations are also planning on reducing their reliance fossil fuel. Many planned green projects will contribute in 26% of energy supply for the region by 2050 achieving emission reductions equal to 1.1 Gt CO2/year. [197] Massive Renewable Energy Projects in the Middle East: [197] Mohammed bin Rashid Al Maktoum Solar Park in Duba, UAE