Preparing some copper(I) ions for a reduction. Chemistry is always fun when it’s possible to work on a lit larger scale.

The deep blue color of the tetraamminecopper(II) ions is quite characteristic. If some copper(II) ions are present in a solution and ammonia is added, the solution will turn into deep blue from the original faint blue color.

What happens here? This: CuSO4(aq) + 4 NH3(aq) —> [Cu(NH3)4]SO4(aq)

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Main Gate - Animal Crossing [Trumpet Cover]

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just built my new mutation x v3. .3 ohm dual coil micro coil. 24g kanthal 8wraps at 2mm diameter. this thing is a beast. amazing airflow good flavor. my only problems are it doesnt is flush on my mechmod, the o rings dont make a snug fit, and the 510 drip tip adaptor doesnt fit. now this is just at first use. beside that this is a badass rda.
ive said in the past to avoid copper rdas but in my recent research i have learned that for the lead toxins to be released the copper must be heated to smelting point, which is not possible for a mechanical mod

A work in progress of a gift I have been working on lately! It’s… technically finished. I’ve just been a lazy bum and haven’t put it on a cord yet and taken nice photos, whoops. At least I’m honest?

And yes, it’s the Lyrium mark from Dragon Age because they absolutely adore Fenris and it was something I figured would symbolize him best? Don’t mind me and my canon blindness to this series!

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The Tsars’s vodka in action. Aqua regia or Царская водка in Russian is a 3/1 mixture of hydrochloric acid and nitric acid.

Upon mixing concentrated hydrochloric acid and concentrated nitric acid a chemical reactions occurs. The product of the reaction is nitrosyl chloride and chlorine as evidenced by the fuming nature and characteristic yellow color of aqua regia. In this case the dissolved copper and other transition metals turned the color of the solution deep green, but the gas over the solution is yellow from the chlorine and nitrous fumes.

Interesting fact about the Nobel prize and the dissolution of gold:

When Nazi Germany occupied Denmark from April 1940, during World War II, György de Hevesy dissolved the gold Nobel Prizes of Max von Laue and
James Franck with aqua regia; it was illegal at the time to send gold out of the country, and were it discovered that Laue and Franck had done so to prevent them from being stolen, they could have faced prosecution in Germany. He placed the resulting solution on a shelf in his laboratory at the Niels Bohr Institute. After the war, he returned to find the solution undisturbed and precipitated the gold out of the acid. The Nobel Society then recast the Nobel Prizes using the original gold.

George de Hevesy got his Noble Prize in Chemistry for ”for his work on the use of isotopes as tracers in the study of chemical processes” in 1943.

Max von Laue got his Nobel Prize in Physics for ”for his discovery of the diffraction of X-rays by crystals” in 1914.

James Franck got his Nobel Prize in Physics ”for his discovery of the laws governing the impact of an electron upon an atom” in 1925.

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Collections Highlight: Chrysanthemum Gown 

I stumbled upon these photos while looking for something else (lucky me). This gown was the highlight of an exhibiton done a few years ago at The Fenimore Art Museum. The exhibition also came with some great professional photography by local photographer Richard Walker

The exhibition curator Susan Friedlander’s notes that the: “the chrysanthemum-patterned silk brocade on this dress was most likely inspired by the exotic goods displayed in the popular Japanese exhibits at the 1876 Centennial International Exhibition in Philadelphia, the first significant World’s Fair to be held in the United States.”

This dress was owned and worn by Lucy Clark. 

Chrysanthemum Gown, Bodice and Skirt, ca. 1876, Martha J. De La Mater, Silk. The Fenimore Art Museum, Cooperstown, New York, Gift of Harriet Stroudberg, N0129.1966, Photographed by Richard Walker