The r isomer of limonene has an optical rotation alphaof, Ask an Expert

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the R isomer of limonene has an optical rotation, alpha,of +123 degrees the S isomer has an optical rotation, alpha, of -123 degrees. IF the observed rotation of a mixture of the R and S isomer resulted in a alpha of 109 degrees, what are the percentages of the isomers presents? What is the ee

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