GOB Chemistry
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The main component of the crystals in taro that causes itching is calcium oxalate (CaC2O4). The solubility of calcium oxalate in water is 6.66×10–3 g/L at room temperature. What is this concentration in (m/v)%, in ppm, and in molarity?
Water standards set that the maximum contaminant levels (MCL) of mercury and cadmium in water are 0.002 mg/kg and 0.005 mg/kg, respectively. What are these values in parts per million (ppm) and indicate the maximum level of each contaminant (in mg) in 200 g of water?