Men's hats are sized according to diameter while women's are based on circumference. The most common hat size for men is 7 1/8 and for women, 221. To measure the size of a person's head, use a flexible tape measure to measure the circumference at the widest part of the head, usually an inch above the eyebrows.
Arrhenius argued that bases are neutral compounds that either dissociate or ionize in water to give OH-ions and a positive ion. NaOH is an Arrhenius base because it dissociates in water to give the hydroxide (OH -) and sodium (Na +) ions.
For aqueous solutions of an acid HA, the base is water; the conjugate base is A â and the conjugate acid is the hydronium ion. The BroenstedâBrÃ¸nsted lowry definition applies to other, solvents such as dimethyl: sulfoxide the Solvent s acts as a, base accepting a proton and forming the conjugate ACID + . sh