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The density of saline water has a density of 1.2 kg/L a 25°C. The saline water contains 100,000 mg/kg (ppm) of sodium.

 

a)      Express this sodium concentration in mg/L.

 

 

 

b)      Now the saline water is heated to 100°C. At this temperature, 1 kg of the saline water has a volumen of 0.84 L. Calculate the sodium concentration (in mg/L) at this temperature.

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