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The CB logo was initially designed in 1967 by the artist Jean-Marie Chourgnoz for the Carte Bleue group (acquired by Visa in 2010). In 1984, the Groupement des cartes bancaires was established. The CB logo, already widely recognized as it adorned the majority of bank cards (Carte Bleue being the most popular network in 1984), was then reused ...
Calcium hydroxide is modestly soluble in water, as seen for many dihydroxides. Its solubility increases from 0.66 g/L at 100 °C to 1.89 g/L at 0 °C. [8] Its solubility product K sp of 5.02 × 10 −6 at 25 °C, [1] its dissociation in water is large enough that its solutions are basic according to the following dissolution reaction:
Ooredoo QSC [a] [4] (Arabic: أريد; formerly Qtel) is a Qatari multinational telecommunications company headquartered in Doha. Ooredoo provides mobile, wireless, wire line, and content services with market share in domestic and international telecommunication markets, and in business (corporations and individuals) and residential markets.
Gadolinium(III) hydroxide can be produced in various ways such as the reaction of gadolinium(III) nitrate and sodium hydroxide: [1]. Gd(NO 3) 3 + NaOH → Gd(OH) 3 + NaNO 3. If this compound is heated to 307 °C, it decomposes to gadolinium(III) oxide-hydroxide(GdOOH), which in turn decomposes to gadolinium(III) oxide if continually heated.
Ooredoo Oman (formerly Nawras) is an Omani telecommunications company owned by Ooredoo (formerly the Qtel Group). It is the Sultanate's first privately owned telecommunications company and had a consolidated global customer base of more than 58 million customers as of 31 December 2023. [ 1 ]
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Scandium(III) hydroxide is an inorganic compound with the chemical formula Sc(OH) 3, the trivalent hydroxide of scandium. It is an amphoteric compound. [2] It is slightly soluble in water, and its saturated solution (pH = 7.85) contains Sc(OH) 3 and a small amount of Sc(OH) + 2. The solubility of scandium(III) hydroxide in water is 0.0279 mol/L.