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

Easy definition for atom and atomic mass

Describe the chemical reaction based on the chemical equation below. also, explain whether the equation is balanced.

Will give brainliest it is a lab from k12 here is the linkfor each metal that participated in a chemical change, write the type of metal it is, based on your examination of the periodic table. type your answer here. (score for question 3: of 5 points) were there any metallic compounds that did not react with either the acid or the base? write the type of metal, based on your examination of the periodic table. type your answer here. (score for question 4: of 5 points) make a general statement about the reactivity of the metals in this experiment. type your answer here.