How many kilometers in 25 angstrom?

Answer 1

The Angstrom is a very small unit of linear measure. It so small that it is used in spectrometry to express the wavelength of light. It is 1 x 10-10 meters (or 10-10 m). That means that there are 1 x 1010 (or 1010) angstroms in just 1 meter. A kilometer (km) is 1000 meters, which is 103 meters, so there would be 1013 angstroms in a kilometer. (We add exponents: 1010 x 103 = 1010 + 3 = 1013.) As there are 1013 angstroms in a kilometer, there will be 10-13 kilometers in an angstrom. (We inverted to find that.) If you have 25 angstroms that you want to convert to kilometers, that's 25 x 10-13 kilometers in the 25 angstroms.