Phosphoric acid is a triprotic acid, ionizing in the following sequential steps:. H3PO4 H2O H2PO4 - H3O Ka 1
H2PO4 - H2O HPO4 2- H3O Ka2
HPO4 2- H2O PO4 3- H3O Ka3
What is the Kb expression for the base, sodium phosphate?

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How does climate change cause the ocean's thermohaline current to slow down?

Tooth enamel consists mainly of the mineral calcium hydroxyapatite, ca_10(po_4)_6(oh)_2. trace elements in teeth of archaeological specimens provide anthropologist with clues about diet and diseases of ancient people. students at hamline university measured strontium in enamel from extracted wisdom teeth by atomic absorption spectroscopy. solutions with a constant total volume of 10.0 ml contained 0.726 mg of dissolved tooth enamel plus variable concentrations of added sr. added sr find the concentration of sr in the 10 ml sample solution in parts per billion = ng/ml. find the concentration of sr in tooth enamel in parts per million = mu g/g.