Acoefficientsis "a number placed in front of achemical symbolor formula. It shows the number ofatomsormoleculesof the substance that are involved in thechemical reaction".What is chemical symbol?Achemical symbolis "a one or two letter designation of an element".What is atom?Atomis the smallest unit of matter.What are molecules?Moleculesare made up of two or moreatoms.What is chemical reaction?Chemical reactionis a process in which two or more reactants are converted into products.Hence, 2K+Br₂ → 2KBr is the balanced equation with correctcoefficients.To learn more aboutcoefficientsherebrainly.com/question/4089027#SPJ2...

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