A solution containing 1 point 1 5 mol benzene dissolved in carbon tetrachloride has a concentration of 0 point 8 6 m How many kilograms of carbon tetrachloride must the solution contain? Use molality is equal to moles of solute over kilograms of solvent

Molality = moles of solute ÷ kilograms of solvent, so rearrange to find kilograms of solvent: kilograms = 1.15 mol ÷ 0.86 mol/kg ≈ 1.34 kg. Rounded to the precision of the choices, this is 1.3 kilograms of carbon tetrachloride, choice D.

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