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4. The refractive indices of cyclohexane and toluene are 1.4264 and 1.4967, respectively, at 20°C. A mixture of these two liquids has a refractive index of 1.4563 at that same temperature. Assuming that the relationship between refractive index and concentration is linear, calculate the composition of the mixture. 5. If two samples of organic liquids give the same refractive index reading, are the two liquids the same? Explain.

          4. The refractive indices of cyclohexane and toluene are 1.4264 and 1.4967, respectively, at 20°C. A mixture of these two liquids has a refractive index of 1.4563 at that same temperature. Assuming that the relationship between refractive index and concentration is linear, calculate the composition of the mixture.
5. If two samples of organic liquids give the same refractive index reading, are the two liquids the same? Explain.

$4. The refractive indices of cyclohexane and toluene are 1.4264 and 1.4967, respectively, at 20°C. A mixture of these two liquids has a refractive index of 1.4563 at that same temperature. Assuming that the relationship between refractive index and concentration is linear, calculate the composition of the mixture. 5. If two samples of organic liquids give the same refractive index reading, are the two liquids the same? Explain.$

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