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  2. Bicarbonate indicator - Wikipedia

    en.wikipedia.org/wiki/Bicarbonate_indicator

    Carbon dioxide, even in the concentrations found in exhaled air, will dissolve in the indicator to form carbonic acid, a weak acid, which will lower the pH and give the characteristic colour change. [1] A colour change to purple during photosynthesis shows a reduction in the percentage of carbon dioxide and is sometimes inferred as production ...

  3. Phenol red - Wikipedia

    en.wikipedia.org/wiki/Phenol_red

    Phenol red exists as a red crystal that is stable in air. Its solubility is 0.77 grams per liter (g/L) in water and 2.9 g/L in ethanol. [1] It is a weak acid with p Ka = 8.00 at 20 °C (68 °F). A solution of phenol red is used as a pH indicator, often in cell culture.

  4. Zazzle - Wikipedia

    en.wikipedia.org/wiki/Zazzle

    URL. zazzle.com. Launched. 2005. Written in. C#/ASP.NET. [1] Zazzle is an American online marketplace that allows designers and customers to create their own products with independent manufacturers (clothing, posters, etc.), as well as use images from participating companies.

  5. NBA playoffs: Celtics take 3-1 series lead over Cavs, who ...

    www.aol.com/sports/nba-playoffs-celtics-3-1...

    The Boston Celtics beat a Cleveland Cavaliers team without Donovan Mitchell in Game 4 of their second-round NBA playoff series. The 109–102 win gave Boston a 3-1 lead in their matchup.

  6. pH indicator - Wikipedia

    en.wikipedia.org/wiki/PH_indicator

    A pH indicator is a halochromic chemical compound added in small amounts to a solution so the pH (acidity or basicity) of the solution can be determined visually or spectroscopically by changes in absorption and/or emission properties. Hence, a pH indicator is a chemical detector for hydronium ions (H 3 O +) or hydrogen ions (H +) in the ...

  7. See Athens Blanketed by Orange Haze Due to Sahara Dust Storm

    www.aol.com/see-athens-blanketed-orange-haze...

    April 24, 2024 at 12:22 PM. Dust clouds from the Sahara desert in North Africa have blown across the Mediterranean Sea and turned Greece’s sky orange on Tuesday. Historic landmarks in the ...