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  2. Lactaldehyde - Wikipedia

    en.wikipedia.org/wiki/Lactaldehyde

    Lactaldehyde is a three-carbon atom species with a carbonyl group on the first carbon atom (making it an aldehyde), and a hydroxy group on the second carbon atom, making it a secondary alcohol.

  3. Isotopes of thorium - Wikipedia

    en.wikipedia.org/wiki/Isotopes_of_thorium

    231 Th has 141 neutrons. It is the decay product of uranium-235. It is found in very small amounts on the earth and has a half-life of 25.5 hours. [53] When it decays, it emits a beta ray and forms protactinium-231. It has a decay energy of 0.39 MeV. It has a mass of 231.0363043 u.

  4. IUPAC nomenclature of organic chemistry - Wikipedia

    en.wikipedia.org/wiki/IUPAC_nomenclature_of...

    formula of a carboxylate ion Salts of carboxylic acids are named following the usual cation -then- anion conventions used for ionic compounds in both IUPAC and common nomenclature systems. The name of the carboxylate anion ( R−C(=O)O − ) is derived from that of the parent acid by replacing the "–oic acid" ending with "–oate" or ...

  5. IUPAC nomenclature of inorganic chemistry - Wikipedia

    en.wikipedia.org/wiki/IUPAC_nomenclature_of...

    The names "caffeine" and "3,7-dihydro-1,3,7-trimethyl-1H-purine-2,6-dione" both signify the same chemical compound.The systematic name encodes the structure and composition of the caffeine molecule in some detail, and provides an unambiguous reference to this compound, whereas the name "caffeine" simply names it.

  6. Protactinium - Wikipedia

    en.wikipedia.org/wiki/Protactinium

    Two major protactinium isotopes, 231 Pa and 233 Pa, are produced from thorium in nuclear reactors; both are undesirable and are usually removed, thereby adding complexity to the reactor design and operation. In particular, 232 Th, via (n, 2n) reactions, produces 231 Th, which quickly decays to 231 Pa (half-life 25.5 hours).

  7. Mass fraction (chemistry) - Wikipedia

    en.wikipedia.org/wiki/Mass_fraction_(chemistry)

    In chemistry, the mass fraction of a substance within a mixture is the ratio (alternatively denoted ) of the mass of that substance to the total mass of the mixture. [1] Expressed as a formula, the mass fraction is:

  8. Lady Gaga's Engagement Ring Is Even Bigger Than We ... - AOL

    www.aol.com/lifestyle/lady-gagas-engagement-ring...

    Lady Gaga is showing off quite the sparkler on Carpool Karaoke!. The singer, 38, revealed her giant-sized engagement ring while appearing in Apple TV+ and Apple Music’s Christmas special of A ...

  9. Basic lead phosphite - Wikipedia

    en.wikipedia.org/wiki/Basic_lead_phosphite

    Basic lead phosphite is an inorganic compound with the proposed composition Pb 3 O(OH) 2 (HPO 3). [1] The compound contains the phosphite anion, which provides the reducing properties associated with the application of this material.