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2. Hydrochloric acid - Wikipedia

   en.wikipedia.org/wiki/Hydrochloric_acid

   Hydrochloric acid has been used for dissolving calcium carbonate, e.g. such things as de-scaling kettles and for cleaning mortar off brickwork. When used on brickwork the reaction with the mortar only continues until the acid has all been converted, producing calcium chloride, carbon dioxide, and water: CaCO 3 + 2 HCl → CaCl 2 + CO 2 + H 2 O

3. What deals you should be shopping at Walmart this week ... - AOL

   www.aol.com/lifestyle/what-deals-you-should-be...

   Walmart deals: 50% off or more. ... $69 (originally $79): Whether you're looking to make pasta, stew or an entire roast, the Everyday Possible Cooker is the multifunctional appliance for you! Its ...

4. Ben Shelton - Wikipedia

   en.wikipedia.org/wiki/Ben_Shelton

   As a result, he moved 45 positions up into the top 50, at world No. 44, for the first time in his career. [ 27 ] [ 28 ] In the beginning of the American hard court season for 2023, Shelton faced a tough start, experiencing defeat in the opening round at the 2023 Delray Beach Open , losing in straight sets to Marcos Giron .

5. Lithium-ion battery - Wikipedia

   en.wikipedia.org/wiki/Lithium-ion_battery

   A lithium-ion or Li-ion battery is a type of rechargeable battery that uses the reversible intercalation of Li + ions into electronically conducting solids to store energy. In comparison with other commercial rechargeable batteries, Li-ion batteries are characterized by higher specific energy, higher energy density, higher energy efficiency, a longer cycle life, and a longer calendar life.

6. Rainbow - Wikipedia

   en.wikipedia.org/wiki/Rainbow

   [47] [48] Shortly after, the fourth-order rainbow was photographed as well, [49] [50] and in 2014 the first ever pictures of the fifth-order (or quinary) rainbow were published. [51] The quinary rainbow lies partially in the gap between the primary and secondary rainbows and is far fainter than even the secondary.

7. Amazon (company) - Wikipedia

   en.wikipedia.org/wiki/Amazon_(company)

   On November 8, 2023, a plan was adopted for Jeff Bezos to sell approximately 50 million shares of the company over the next year (the deadline for the entire sales plan is January 31, 2025). The first step was the sale of 12 million shares for about $2 billion.