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Sodium percarbonate or sodium carbonate peroxide is a chemical substance with empirical formula Na 2 H 3 C 2 O 6. It is an adduct of sodium carbonate ("soda ash" or "washing soda") and hydrogen peroxide (that is, a perhydrate) whose formula is more properly written as 2 Na 2 CO 3 · 3 H 2 O 2. It is a colorless, crystalline, hygroscopic and ...
4,4′-Diamino-2,2′-stilbenedisulfonic acid is the organic compound with the formula (H 2 NC 6 H 3 SO 3 H) 2 C 2 H 2. It is a white, water-soluble solid. Structurally, it is a derivative of trans-stilbene, containing amino and sulfonic acid functional groups on each of the two phenyl rings. The compound is a popular optical brightener for use ...
A white surface treated with an optical brightener can emit more visible light than that which shines on it, making it appear brighter. The blue light emitted by the brightener compensates for the diminishing blue of the treated material and changes the hue away from yellow or brown and toward white. [2]
A new study found that cold-water immersion offers a number of short-lived potential health benefits. In the 12 hours after cold-water immersion, participants had reduced stress levels. Brief cold ...
Looking for hints to today's Wordle puzzle for January 31? Here are clues, vowels, the first letter and the answer to puzzle #1322.
The US economy kicked off 2025 by adding 143,000 jobs in January, fewer than expected; but the unemployment rate dipped to 4%, according to data released Friday by the Bureau of Labor Statistics.
1,3-Dichloro-1,1,2,2,3-pentafluoropropane (HCFC-225cb, chemical formula C 3 HF 5 Cl 2) is a hydrochlorofluorocarbon.It is a volatile derivative of propane which has served as an HCFC replacement for the CFC, 1,1,2-trichloro-1,2,2-trifluoroethane which was used as a cleaning agent which has been used in the aerospace and electronics industries [2] since the phase out of class 1 ozone depleting ...
World No. 1 Jannik Sinner defended his Australian Open title on Sunday, comfortably defeating Alexander Zverev 6-3, 7-6(4), 6-3 in the men’s final to secure his third career grand slam win.
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