Are the properties of water solutions different from the properties of pure water? If so, how?

Figure P2.33 shows a portion of the H,O-NaCl phase diagram. 10 Liquid (brine) Salt Ice + -10 F liquid (brine) liquid (brine) -20 Ice + salt -30 NaCI 10 20 30 H2O 100 90 80 70 FIGURE P2.33 Composition, weight % a. Using the diagram, briefly explain how spreading salt on ice causes the ice to melt. Show numerical examples in your discussion. b. At a salt composition of 10%, what is the temperature at which ice will start melting? c. What is the eutectic temperature of the ice and salt combination? Temperature, °C

The following mineral analysis was reported for a water sample taken from a municipal groundwater water well. Determine the total, carbonate and non carbonate hardness in mg/L as CaCO3 using the predominant polyvalent cation definition of hardness. All reported as "mg/L as the ion"  Iron 0.2 Manganese 0.6 Ammonium  0.5 Sodium  4.7 Potassium 0.9 Calcium  67.2 Magnesium  39 Barium  0.5 Silica 20 Flouride  0.35 Boron  0.1 Nitrate 0 Chloride 4.5 Sulfate  29 Alkalinity  284 as CaCo3 pH 7.6 units

A liquid has an absolute viscosity of 2.431023 N-s/m?. It weighs 7.853103 N/m?. What is its kinematic viscosity?