138. Solving a chemistry problem
4. The vapor pressure of sulfuric ether at 293 K is 0.589 * 105 Pa, and the vapor pressure of a solution containing 0.0061 kg of benzoic acid in 0.05 kg of ether at the same temperature is 0.548 * 105 Pa. Calculate the molecular weight of benzoic acid in ether and the relative error of the experiment as a percentage of the value given in the reference tables.
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