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In chemistry, the mass fraction of a substance within a mixture is the ratio (alternatively denoted ) of the mass of that substance to the total mass of the mixture. [ 1] Expressed as a formula, the mass fraction is: Because the individual masses of the ingredients of a mixture sum to , their mass fractions sum to unity:
A simple fraction (also known as a common fraction or vulgar fraction, where vulgar is Latin for "common") is a rational number written as a / b or , where a and b are both integers. [9] As with other fractions, the denominator ( b) cannot be zero. Examples include 1 2 , − 8 5 , −8 5 , and 8 −5 .
Two criteria often used to determine the mixed layer depth are temperature and sigma-t (density) change from a reference value (usually the surface measurement). The temperature criterion used in Levitus [ 5 ] (1982) defines the mixed layer as the depth at which the temperature change from the surface temperature is 0.5 °C.
Ethanol fuel mixtures have "E" numbers which describe the percentage of ethanol fuel in the mixture by volume, for example, E85 is 85% anhydrous ethanol and 15% gasoline. Low-ethanol blends are typically from E5 to E25, although internationally the most common use of the term refers to the E10 blend. Blends of E10 or less are used in more than ...
e. Mixed-member proportional representation ( MMP or MMPR) is a mixed electoral system which combines local winner-take-all elections with a compensatory tier of party list votes, which are used to allocate additional members in a way that aims to produce proportional representation overall. In typical MMP systems, voters get two votes: one to ...
African Americans, Hispanic Americans, Métis Americans, Louisiana Creoles, Hapas, Melungeons. Multiracial Americans or mixed-race Americans are Americans who have mixed ancestry of two or more races. The term may also include Americans of mixed-race ancestry who self-identify with just one group culturally and socially (cf. the one-drop rule ).
Left hands make up over 90% of the artwork, demonstrating the prevalence of right-handedness. [ 1] A female student writes with her left hand. In human biology, handedness is an individual's preferential use of one hand, known as the dominant hand, due to it being stronger, faster or more dextrous. The other hand, comparatively often the weaker ...
The pycnocline is the transitory region between a surface layer of water (warmer and less dense) and deeper layer of water (colder and more dense). Mixing occurs across the pycnocline, driven primarily by waves and shear. A pycnocline is the cline or layer where the density gradient ( ∂ ρ ∂ z) is greatest within a body of water.