A compound was reported by a chemist to have the chemical formula C46H68O12Nx, where x needed to be determined. 50.68 mg of this compound was combusted. Upon combustion, the amounts of nitrogen dioxide and nitrogen gas were determined to be 6.4 mg nitrogen dioxide and 0.576 mL nitrogen gas. What is the chemical formula of the compound

Which metal exist in liquid state and can be cut with knife ?

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.

Adirect relationship can be represented by: a curve a pie chart