Chemistry, 25.12.2019 19:31 Nextlevel3
Check all that apply.
a. the electron configuration of o2− is [he]2s22p6.
b. the electron configuration of ag+ is [kr]5s14d9.
c. the electron configuration of ni is [ar]4s23d8.
d. the electron configuration of k is [ar]4s03d1.
e. the electron configuration of si is [ne]3s23p2.
Answers: 3
Chemistry, 22.06.2019 21:40
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.
Answers: 2
Chemistry, 22.06.2019 23:30
Aweight lifter raises a 1600 n barbell to a height of 2.0 meters. how much work was done? w = fd a) 30 joules b) 3000 joules c) 320 joules d) 3200 joules
Answers: 2
Chemistry, 23.06.2019 15:30
Among these processes, which is the slowest chemical reaction? a. digesting food b. boiling an egg c. tarnishing of silver d. melting of a glacier
Answers: 2
Check all that apply.
a. the electron configuration of o2− is [he]2s22p6.
b. the elect...
a. the electron configuration of o2− is [he]2s22p6.
b. the elect...
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