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On cooling, the compound becomes a light yellow metastable phase, which over 2–3 weeks turns back into original red. [8] Many other tetrachloronickelates are also thermochromic. Bis(diethylammonium) tetrachlorocuprate(II) ([(CH 3 CH 2 ) 2 NH 2 ] 2 CuCl 4 ) is a bright green solid material, which at 52–53 °C reversibly changes color to yellow.
The global office supplies market, valued at USD 151.46 billion in 2022, is projected to witness a 2.1% compound annual growth rate (CAGR) from 2023 to 2030. [3] The industry's expansion is attributed to the flourishing global services sector and increased product consumption in education.
Discarded printing plates from these card presses, each printing plate the size of an IBM card and formed into a cylinder, often found use as desk pen/pencil holders, and even today are collectible IBM artifacts (every card layout [75] had its own printing plate). In the mid-1930s a box of 1,000 cards cost $1.05 (equivalent to $23 in 2023). [76]
The good news: there are still ways to wear your favorite pieces of jewelry. The post This Is Why Your Skin Turns Green After Wearing Certain Jewelry appeared first on Reader's Digest.
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How do animals obtain water in the winter when water sources are frozen. Some hibernate; that's all I know. Melchoir 01:09, 1 May 2006 (UTC) []. Although this is a very silly question for us Canadians, I actually found a quote: "Studies in Canada have shown some cows have gone 50 to 60 days with snow as the sole water source without any adverse effects.
A pencil case can also contain a variety of other stationery such as sharpeners, pens, glue sticks, erasers, scissors, and rulers. Pencil cases can be made from a variety of materials such as wood or metal. Some pencil cases have a hard and rigid shell encasing the pens inside, while others use a softer material such as plastic, leather or cotton.
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