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  2. Calcium carbonate - Wikipedia

    en.wikipedia.org/wiki/Calcium_carbonate

    Calcium carbonate is a chemical compound with the chemical formula Ca CO 3. It is a common substance found in rocks as the minerals calcite and aragonite , most notably in chalk and limestone , eggshells , gastropod shells , shellfish skeletons and pearls .

  3. Carbonate hardness - Wikipedia

    en.wikipedia.org/wiki/Carbonate_hardness

    3 – meaning the concentration of carbonate expressed as if calcium carbonate were the sole source of carbonate ions. An aqueous solution containing 120 mg NaHCO 3 (baking soda) per litre of water will contain 1.4285 mmol/l of bicarbonate, since the molar mass of baking soda is 84.007 g/mol. This is equivalent in carbonate hardness to a ...

  4. Calcium - Wikipedia

    en.wikipedia.org/wiki/Calcium

    Molar heat capacity: ... it is a better conductor by mass than both due to its very low ... Corals, sea shells, and pearls are mostly made up of calcium carbonate.

  5. Aragonite - Wikipedia

    en.wikipedia.org/wiki/Aragonite

    Aragonite is the high pressure polymorph of calcium carbonate. As such, it occurs in high pressure metamorphic rocks such as those formed at subduction zones. [13] Aragonite forms naturally in almost all mollusk shells, and as the calcareous endoskeleton of warm- and cold-water corals (Scleractinia). Several serpulids have aragonitic tubes. [14]

  6. Barium carbonate - Wikipedia

    en.wikipedia.org/wiki/Barium_carbonate

    Molar mass: 197.34 g/mol Appearance ... Std molar entropy (S ... Calcium carbonate Strontium carbonate Radium carbonate:

  7. Ammonium carbonate - Wikipedia

    en.wikipedia.org/wiki/Ammonium_carbonate

    Molar mass: 96.086 g·mol −1 ... of a mixture of ammonium sulfate and calcium carbonate and occurs as a white powder or a hard, white or translucent mass. [4]

  8. Today's Wordle Hint, Answer for #1258 on Thursday, November ...

    www.aol.com/todays-wordle-hint-answer-1258...

    Today's Wordle Answer for #1258 on Thursday, November 28, 2024. Today's Wordle answer on Thursday, November 28, 2024, is CHOCK. How'd you do? Next: Catch up on other Wordle answers from this week.

  9. Calcium acetate - Wikipedia

    en.wikipedia.org/wiki/Calcium_acetate

    Molar mass: 158.166 g/mol (anhydrous) 176.181 g/mol (monohydrate) Appearance White solid ... Calcium acetate can be prepared by soaking calcium carbonate ...