When 12.36g of calcium trioxo carbonate (iv) was added to excess dilute hydrochloric acid carbon (iv) oxide was evolved. the entire reaction took 7 minutes. calculate the rate of reaction?

1. list three scientific reasons cockroaches may fly.

What information does a complete ionic equation give that the balanced equation doesn’t show?

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.