Nitrogen will react with hydrogen to form the compound ammonia. the compound formed has properties that are different from the elements that make it up. what has to occur in order for this compound to be formed?

What occurs when a cell engulfs large food particals

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.

What does an electron configuration for an atom relate to the atoms placement on the periodic table