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  2. Dibromomethane - Wikipedia

    en.wikipedia.org/wiki/Dibromomethane

    Dibromomethane is prepared commercially from dichloromethane via bromochloromethane: . 6 CH 2 Cl 2 + 3 Br 2 + 2 Al → 6 CH 2 BrCl + 2 AlCl 3 CH 2 Cl 2 + HBr → CH 2 BrCl + HCl. The latter route requires aluminium trichloride as a catalyst. [3]

  3. Chemical polarity - Wikipedia

    en.wikipedia.org/wiki/Chemical_polarity

    Polar molecules must contain one or more polar bonds due to a difference in electronegativity between the bonded atoms. Molecules containing polar bonds have no molecular polarity if the bond dipoles cancel each other out by symmetry. Polar molecules interact through dipole-dipole intermolecular forces and hydrogen bonds.

  4. Polar aprotic solvent - Wikipedia

    en.wikipedia.org/wiki/Polar_aprotic_solvent

    A polar aprotic solvent is a solvent that lacks an acidic proton and is polar. Such solvents lack hydroxyl and amine groups. In contrast to protic solvents, these solvents do not serve as proton donors in hydrogen bonding, although they can be proton acceptors. Many solvents, including chlorocarbons and hydrocarbons, are classifiable as aprotic ...

  5. Carbon tetrabromide - Wikipedia

    en.wikipedia.org/wiki/Carbon_tetrabromide

    CBr 4 can be obtained by the bromination of methane.The byproducts include other brominated methanes (methyl bromide, dibromomethane and bromoform) and hydrogen bromide.This process is analogous to the chlorination of methane:

  6. Trump's approval rating slips as Americans worry about the ...

    www.aol.com/news/trumps-approval-rating-slips...

    U.S. President Donald Trump's approval rating has ticked slightly lower in recent days as more Americans worried about the direction of the U.S. economy as the new leader threatens a host of ...

  7. Molecular solid - Wikipedia

    en.wikipedia.org/wiki/Molecular_solid

    Models of the packing of molecules in two molecular solids, carbon dioxide or Dry ice (a), [1] and caffeine (c). [2] The gray, red, and purple balls represent carbon, oxygen, and nitrogen, respectively.

  8. Today’s NYT ‘Strands’ Hints, Spangram and Answers for ...

    www.aol.com/today-nyt-strands-hints-spangram...

    Find non-theme words to get hints. For every 3 non-theme words you find, you earn a hint. Hints show the letters of a theme word. If there is already an active hint on the board, a hint will show ...

  9. Bromomethane - Wikipedia

    en.wikipedia.org/wiki/Bromomethane

    Bromomethane, commonly known as methyl bromide, is an organobromine compound with formula C H 3 Br.This colorless, odorless, nonflammable gas is produced both industrially and biologically.