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  2. Substitution reaction - Wikipedia

    en.wikipedia.org/wiki/Substitution_reaction

    The two reactions are named according tho their rate law, with S N 1 having a first-order rate law, and S N 2 having a second-order. [2] S N 1 reaction mechanism occurring through two steps. The S N 1 mechanism has two steps. In the first step, the leaving group departs, forming a carbocation (C +). In the second step, the nucleophilic reagent ...

  3. Intrinsic DNA fluorescence - Wikipedia

    en.wikipedia.org/wiki/Intrinsic_DNA_fluorescence

    A particular class of emitting states with mixed ππ*/charge transfer character [52] [53] was detected in all types of duplexes, [54] [55] including genomic DNA. [56] Their specificity is that their fluorescence appears at short wavelengths (λ<330 nm) and it is long-lived, decaying within a few nanoseconds.

  4. Adduct - Wikipedia

    en.wikipedia.org/wiki/Adduct

    A good example from solid-state chemistry is the adducts of ethylene or carbon monoxide of CuAlCl 4. The latter is a solid with an extended lattice structure . Upon formation of the adduct, a new extended phase is formed in which the gas molecules are incorporated (inserted) as ligands of the copper atoms within the structure.

  5. List of chemistry mnemonics - Wikipedia

    en.wikipedia.org/wiki/List_of_chemistry_mnemonics

    A mnemonic is a memory aid used to improve long-term memory and make the process of consolidation easier. Many chemistry aspects, rules, names of compounds, sequences of elements, their reactivity, etc., can be easily and efficiently memorized with the help of mnemonics.

  6. Chemistry - Wikipedia

    en.wikipedia.org/wiki/Chemistry

    Chemistry is the scientific study of the properties and behavior of matter. [1] It is a physical science within the natural sciences that studies the chemical elements that make up matter and compounds made of atoms, molecules and ions: their composition, structure, properties, behavior and the changes they undergo during reactions with other substances.

  7. Memorials, tributes and donations pour in for New Orleans ...

    www.aol.com/orleans-attack-among-15-dead...

    Among the 14 people killed in the New Orleans attack: a warehouse manager, an account executive, an aspiring nurse and two loving parents.

  8. Food poisoning is extremely common. But that doesn't ... - AOL

    www.aol.com/food-poisoning-extremely-common...

    Few things will put a damper on your vacation or holiday faster than food poisoning.The intense stomach pain, rushing to the toilet and feeling relegated to bed keeps just about everyone out of ...

  9. The 15 best subscription gifts of 2024, no shipping required

    www.aol.com/lifestyle/best-subscription-gifts...

    The games are designed to be playable either with a group completely solo. This could be an amazing gift for a family, but given the complexity of the games, the box is recommended for ages 10 and up.