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For example, the ratio 4:5 can be written as 1:1.25 (dividing both sides by 4) Alternatively, it can be written as 0.8:1 (dividing both sides by 5). Where the context makes the meaning clear, a ratio in this form is sometimes written without the 1 and the ratio symbol (:), though, mathematically, this makes it a factor or multiplier .
c(OsO 4) = 5.1 kg/L / 254.23 g/mol = 20.1 mol/L. A typical protein in bacteria, such as E. coli, may have about 60 copies, and the volume of a bacterium is about 10 −15 L. Thus, the number concentration C is C = 60 / (10 −15 L) = 6 × 10 16 L −1. The molar concentration is c = C / N A = 6 × 10 16 L −1 / 6 × 10 23 ...
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 refractive index of liquid water (1.333 at 20 °C (68 °F)) is much higher than that of air (1.0), similar to those of alkanes and ethanol, but lower than those of glycerol (1.473), benzene (1.501), carbon disulfide (1.627), and common types of glass (1.4 to 1.6). The refraction index of ice (1.31) is lower than that of liquid water.
The ångström is equal to 10 −10 m (one ten-billionth of a meter) or 0.1 nm. In Unicode, the unit is encoded as U+212B Å ANGSTROM SIGN. However, it is canonically equivalent to the ordinary letter Å. The duplicate encoding at U+212B is due to round-trip mapping compatibility with an East-Asian character encoding, but is otherwise not to ...
The racial makeup was 48.9% White, 12.6% African American, 0.9% Native American, 5.7% Asian, 0.6% Pacific Islander, and 5.1% from two or more races. Hispanic or Latino of any race were 48.5% of the population and 30.2% of the population was non-Hispanic White .
In 2006, the U.S. Department of Energy stated that more than 1.5 million homes and businesses were using solar water heating in the United States, representing a capacity of over 1,000 megawatts (MW) of thermal energy generation. It predicted that another 400 MW was likely to be installed over the next 3–5 years.
The archipelago's extant main islands have been above the surface of the ocean for less than 10 million years, a fraction of the time biological colonization and evolution have occurred there. The islands are well known for the environmental diversity that occurs on high mountains within a trade winds field. Native Hawaiians developed complex ...