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  6. Liquid nitrogen for National Chemistry Week, which runs from Oct. 21-27
arrow_back_ios arrow_forward_ios Liquid nitrogen for National Chemistry Week, which runs from Oct. 21-27

October 23, 2018

Liquid nitrogen for National Chemistry Week, which runs from Oct. 21-27

© Sunny/Getty Image

Can you guess what this is?. Of moles and liquid nitrogen

What a coincidence! Three days into USA’s National Chemistry Week, we dive further into STEM education to celebrate Mole Day. We’re not toasting the burrowing animal, but the unit of measurement (mole) used primarily in chemistry and molecular science studies. We don’t know how many moles of liquid nitrogen are in this photo, but we do like the dynamic look of the super-cooled element, which in liquid form can resemble boiling water. We hope this photo doesn’t depict liquid nitrogen after somebody in the lab dropped their keys into the vat. At minus-320 degrees Fahrenheit, liquid nitrogen tends to flash-freeze anything immersed in it.

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