85. Solving a chemistry problem
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Product description
- How many times is the surface tension of glycerin higher than the surface tension of olive oil, if in a capillary with an inner radius of 0.400 mm the column of the first rose to a height h1 = 26.8 mm, and the second - to h2 = 18.8 mm? The density of glycerin is 1.26 g/cm3, olive oil is 0.94 g/cm3. (For the contact angle of both liquids, take cosO = 1, neglect the air density)
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