Percent weight of material A 100 75 50 25 Melting temperature of material A Liquid Liquid and solid Melting temperature of material B Solid 25 50 75 100 Percent weight of material B FIGURE P2.31 Temperature

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

34 If the following diagram represents the sintering of the ceramic MgO, what could the curves x and y refer to? increase in property X 1000 1200 1600 sintering temperature (°C) (A) = grain size; y porosity (B) x grain size; y = strength O(C) x porosity; y-grain size 1400 O (D) x strength; y grain size 1800

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