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Avogadro's number |
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Avogadro's numberNumber of carbon atoms in 12 g of the carbon-12 isotope (6.022045 × 1023). It is named after Italian chemist Amedeo Avogadro. The relative atomic mass of any element, expressed in grams, contains this number of atoms and is called a mole. For example, one mole of any substance contains 6.022 × 1023 particles. One mole of carbon has a mass of 12 g. |
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To remedy these problems, researchers want to define the kilogram as a function of the Avogadro constant, which measures the number of molecules (6. A] is the Avogadro constant, and 1000 is the number of [cm. This measurement was a key input needed to obtain an improved value for the Avogadro constant, a fundamental constant of nature related to the amount of substance, and which may one day lead to a new natural standard of mass. |
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