It’s Mole Day for the Whole Day at the NRC
Posted by on October 23, 2015
Chemistry
fans often refer to Oct. 23 as “Mole Day,” since the numbers 10 and 23
are part of a basic constant in chemistry, the mole. This unit describes
how many atoms exist in a given sample of any substance, so scientists
use moles to simplify lots of calculations. For example, when an average
nuclear reactor first starts up its core has about 120,000 kilograms of
uranium in its fuel. A mole of uranium weighs about 238 grams, so a
brand-new core has about 504,000 moles of uranium. A plant scientist or
NRC specialist would base some core calculations on a more exact
definition of moles in the core.
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