{"query": "Chemistry — the bookkeeping of atoms", "count": 20, "results": [{"id": "card_n_4d5234cab477", "title": "Chemistry — the bookkeeping of atoms", "shelf": "science", "surface": "secular", "snippet": "Chemistry is accounting at the scale of atoms: nothing is created or\ndestroyed, only rearranged, and every claim balances or it is wrong. The engine keeps the\nbooks in-domain (https://narrowhighway.co"}, {"id": "card_n_ae08bd563c6e", "title": "Balancing equations — nothing is created or destroyed", "shelf": "science", "surface": "secular", "snippet": "Lavoisier's law: matter is conserved, so a chemical equation must have equal atoms on\nboth sides. The engine balances in-domain — given CH4 + O2 -> CO2 + H2O it returns the true\ncoefficients CH4 + 2 O"}, {"id": "card_c_4023abd4d182", "title": "pH instantiates chemistry", "shelf": "connections", "surface": null, "snippet": "One face of the sealed chemistry chain."}, {"id": "card_c_79abe5785a52", "title": "The mole instantiates chemistry", "shelf": "connections", "surface": null, "snippet": "One face of the sealed chemistry chain."}, {"id": "card_c_19bc4fcdca92", "title": "Balancing equations instantiates chemistry", "shelf": "connections", "surface": null, "snippet": "One face of the sealed chemistry chain."}, {"id": "card_c_df6451306e63", "title": "The periodic table instantiates chemistry", "shelf": "connections", "surface": null, "snippet": "One face of the sealed chemistry chain."}, {"id": "card_c_b95308320800", "title": "Gibbs free energy instantiates chemistry", "shelf": "connections", "surface": null, "snippet": "One face of the sealed chemistry chain."}, {"id": "card_c_e4c0cb3d2e22", "title": "Chemistry is the substrate of the genetic code", "shelf": "connections", "surface": null, "snippet": "Base pairing, the double helix, and translation are chemistry that copies itself."}, {"id": "card_n_54aba1d3c8cb", "title": "Aurelius, Meditations §aur_10_vi: Either with Epicurus, we must fondly imagine the atoms to be the cause of all...", "shelf": "classics", "surface": "secular", "snippet": "Either with Epicurus, we must fondly imagine the atoms to be the cause of all things, or we must needs grant a nature. Let this then be thy first ground, that thou art part of that universe, which is "}, {"id": "card_n_18b53f98f008", "title": "The mole — counting the uncountable", "shelf": "science", "surface": "secular", "snippet": "A mole is 6.02214076×10²³ things — exact since the 2019 SI redefinition — the bridge\nfrom atoms you cannot see to grams you can weigh. The molar mass is just the atomic weights\nadded up, sealed: water"}, {"id": "card_c_27e331f56531", "title": "pH is a logarithm", "shelf": "connections", "surface": null, "snippet": "pH = -log10[H+] — chemistry using the exact log scale of the senses."}, {"id": "card_n_6e7a5b14e556", "title": "The periodic table — the map of the elements", "shelf": "science", "surface": "secular", "snippet": "118 elements, ordered by proton count, and their properties RECUR in periods — the\nsingle most predictive table in science. Sealed in-domain: carbon is element 6, symbol C\n(https://narrowhighway.com/s"}, {"id": "card_n_080bdf316d2d", "title": "Easton: Leaven", "shelf": "dictionary", "surface": "secular", "snippet": "(1.) Heb. seor (Ex. 12:15, 19; 13:7; Lev. 2:11), the remnant of dough from the preceding baking which had fermented and become acid. (2.) Heb. hamets, properly “ferment.” In Num. 6:3, “vinegar of wine"}, {"id": "card_n_bebd5274c6b8", "title": "Aurelius, Meditations §aur_07_xxvii: To look back upon things of former ages, as upon the manifold changes and con...", "shelf": "classics", "surface": "secular", "snippet": "To look back upon things of former ages, as upon the manifold changes and conversions of several monarchies and commonwealths. We may also foresee things future, for they shall all be of the same kind"}, {"id": "card_n_613971731e5c", "title": "Aurelius, Meditations §aur_09_xxxviii: Either all things by the providence of reason happen unto every particular, a...", "shelf": "classics", "surface": "secular", "snippet": "Either all things by the providence of reason happen unto every particular, as a part of one general body; and then it is against reason that a part should complain of anything that happens for the go"}, {"id": "card_n_de34fa421022", "title": "Gibbs free energy — will a reaction go?", "shelf": "science", "surface": "secular", "snippet": "ΔG = ΔH − T·ΔS decides spontaneity: a reaction proceeds on its own only when ΔG < 0.\nSealed in-domain: ΔH = −100 kJ/mol, ΔS = 200 J/mol·K at 300 K gives ΔG = −160 kJ/mol —\nspontaneous (https://narrowh"}, {"id": "card_n_789214dd088e", "title": "pH — the logarithm of the proton", "shelf": "science", "surface": "secular", "snippet": "pH = −log₁₀[H⁺]: acidity is literally a logarithm, so each unit is a tenfold change in\nproton concentration — pH 4 is ten times more acidic than pH 5, a hundred times more than\npH 6. Sealed in-domain:"}, {"id": "card_n_d8bd8f1d0487", "title": "Aurelius, Meditations §aur_11_xvi: Of everything thou must consider from whence it came, of what things it doth ...", "shelf": "classics", "surface": "secular", "snippet": "Of everything thou must consider from whence it came, of what things it doth consist, and into what it will be changed: what will be the nature of it, or what it will be like unto when it is changed; "}, {"id": "card_n_0a41c0e3298d", "title": "Pheromones — the molecule is the message", "shelf": "science", "surface": "secular", "snippet": "A pheromone is chemistry acting as language: a molecule IS a signal. Sealed: a\n20-component blend encodes 2^20 = 1,048,576 distinguishable messages (~4.3 bits per component),\nand an ant's trail evapor"}, {"id": "card_n_cddf5f9275ce", "title": "Aurelius, Meditations §aur_06_xxii: Alexander of Macedon, and he that dressed his mules, when once dead both came...", "shelf": "classics", "surface": "secular", "snippet": "Alexander of Macedon, and he that dressed his mules, when once dead both came to one. For either they were both resumed into those original rational essences from whence all things in the world are pr"}]}