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HSAB is an acronym for "hard and soft (Lewis) acids and bases".HSAB is widely used in chemistry for explaining the stability of compounds, reaction mechanisms and pathways. It assigns the terms 'hard' or 'soft', and 'acid' or 'base' to chemical species.
A bathtub faucet with built-up calcification from hard water in Southern Arizona. Hard water is water that has a high mineral content (in contrast with "soft water"). Hard water is formed when water percolates through deposits of limestone, chalk or gypsum, [1] which are largely made up of calcium and magnesium carbonates, bicarbonates and sulfates.
Phase diagram of hard sphere system (Solid line - stable branch, dashed line - metastable branch): Pressure as a function of the volume fraction (or packing fraction) The hard sphere system exhibits a fluid-solid phase transition between the volume fractions of freezing η f ≈ 0.494 {\displaystyle \eta _{\mathrm {f} }\approx 0.494} and ...
Water softening is the removal of calcium, magnesium, and certain other metal cations in hard water. The resulting soft water requires less soap for the same cleaning effort, as soap is not wasted bonding with calcium ions. Soft water also extends the lifetime of plumbing by reducing or eliminating scale build-up in pipes
explain Hard water and soft water and how to reduce the hardness — Preceding unsigned comment added by 49.206.5.28 12:34, 20 March 2019 (UTC) Because it is such a huge topic, we have lots of articles about water. This article is about certain technical properties of water. As the Hatnote says: see Water for
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Sonic Drive-In. Sonic uses the word “cheese” on its menu liberally for items including burgers, chili dogs, tots, and fries, but most of it is more cheese-adjacent, if you will.
These easy New Year's appetizer recipes, like fondue bites and shrimp cocktail, will keep the party going all night as you ring in New Year 2025.