Proteins can be cleaved specifically at the amide bond on the carboxyl side of methionine residues by reaction with cyanogen bromide (above). Cleavage proceeds by a four-stage mechanism. The first stage is a nucleophilic substitution reaction of the sulfur of the methionine side chain with BrCN to give a cyanosulfonium ion, [R2SCN] . Draw curved arrows for the first step of this stage. brcn

The organs inside the body and how they function together

8) warming your hands by a fire is an example if which heat transfer? a. conduction b. convection c. radiation d. none of these

Calcium carbonate decomposes at high temperatures to give calcium oxide and carbon dioxide as shown below. caco3(s) cao(s) + co2(g) the kp for this reaction is 1.16 at 800°c. a 5.00 l vessel containing 10.0 g of caco3(s) was evacuated to remove the air, sealed, and then heated to 800°c. ignoring the volume occupied by the solid, what will be the mass of the solid in the vessel once equilibrium is reached?