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What is the molality of 61.3 grams of benzene (C₆H₆) dissolved in 630.4 grams of the solvent cyclohexane (C₆H₁₂)?

A. 0.0975 mol/kg
B. 0.975 mol/kg
C. 9.75 mol/kg
D. 97.5 mol/kg

Answer :

Final answer:

The molality of a benzene solution in cyclohexane is 0.0975 mol/kg.

so the correct answer is b) 0.975 mol/kg.

Explanation:

Molality is a measure of the concentration of a solute in a solution in terms of moles of solute per kilogram of solvent. To calculate the molality of benzene in cyclohexane, you first need to convert the masses of benzene and cyclohexane to moles and kilograms, respectively.

The molality of 61.3 grams of benzene dissolved in 630.4 grams of cyclohexane is 0.0975 mol/kg (a). This calculation involves converting the masses to moles and kilograms and then using the molality formula.

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