Ас [c]
[d]
dissolving powdered sulfur in carbon
disulphide
[UNN 2010/11]
CHEMICAL COMBINATION
Elements P has atomic number of 12 while
element Q has an atomic number 15.
Combination of P and Q gave a compound
PQ, the respective values of m and n are
[a]
2 and 2
[b] 2 and 3
[c]
3 and 2​

What is the lowest number energy level where a d sublevel is found

Is a chemical message sent by another individual.

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.