28. Solving a chemistry problem
235. Calculate, according to the stalagmometric study, the surface tension of ethyl alcohol at 25 ° C, if the number of drops of water is 32, and alcohol is 64. The masses of drops of alcohol and water are 4.713 and 4.724 g, respectively. The surface tension of water at 25°C is 71.97 x 10-3 N/m.
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