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Menulog, based in Sydney, was founded by Dan Katz, Leon Kamenev and Kevin Sherman in 2006. [9] [10] [11] Since its founding the company has handled over 22 million meal orders. [12] In 2007, the same year Menulog launched its first in-store ordering device, the business expanded to Australian cities Brisbane, Canberra and Melbourne.
Substitution reactions in organic chemistry are classified either as electrophilic or nucleophilic depending upon the reagent involved, whether a reactive intermediate involved in the reaction is a carbocation, a carbanion or a free radical, and whether the substrate is aliphatic or aromatic. Detailed understanding of a reaction type helps to ...
Here k is the first-order rate constant, having dimension 1/time, [A](t) is the concentration at a time t and [A] 0 is the initial concentration. The rate of a first-order reaction depends only on the concentration and the properties of the involved substance, and the reaction itself can be described with a characteristic half-life. More than ...
The numbers refer not to the number of steps in the mechanism, but rather to the kinetics of the reaction: E2 is bimolecular (second-order) while E1 is unimolecular (first-order). In cases where the molecule is able to stabilize an anion but possesses a poor leaving group , a third type of reaction, E1 CB , exists.
Just Eat Takeaway operate various food ordering and delivery platforms in twenty countries, [4] where customers can order food online from restaurants’ menus, and have it delivered by restaurant or company couriers directly to their home or workplace using an app or website. [5] The company also partners with IFood in Brazil and Colombia. [6]
Amazon.com was sued on Wednesday by consumers who accused the retailing giant of secretly tracking their movements through their cellphones, and selling data it collects. According to a proposed ...
Also acid ionization constant or acidity constant. A quantitative measure of the strength of an acid in solution expressed as an equilibrium constant for a chemical dissociation reaction in the context of acid-base reactions. It is often given as its base-10 cologarithm, p K a. acid–base extraction A chemical reaction in which chemical species are separated from other acids and bases. acid ...
(The Center Square) – Attorneys general from 22 states sued the Trump administration Monday for cutting federal funding to public health research universities and institutions across the country.