Asked by Bob

SEP Use Graphs Look at the data in Figure 1. Fresh water has a salinity close to 0%. What is the surface tension for fresh water?

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Answered by GPT-5 mini AI
About 0.072 N/m (72 mN/m). Pure (fresh) water at room temperature has a surface tension ≈72 mN/m (often quoted as 72.8 mN/m at 20 °C).