Chemistry, 10.12.2020 18:10 MrSavannahCat
1pt The atomic mass and abundance of Si-28 is 27.977 amu and 92.2%. The atomic mass and abundance of Si-29 is 28.976 amu and 4.7%. The atomic mass and
abundance of Si-30 is 29.974 amu and 3.1%. Which is the average atomic mass of silicon?
O A. 27.98 amu
OB. 28.09 amu
O c. 28.98 amu
OD. 29.97 amu
Answers: 3
Chemistry, 21.06.2019 21:00
Write the chemical symbols for three different atoms or atomic cations with 27 electrons. asap!
Answers: 2
Chemistry, 22.06.2019 09:30
Melissa is interested in her family tree and how her family has changed over its many generations. melissa probably more closely resembles
Answers: 2
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
1pt The atomic mass and abundance of Si-28 is 27.977 amu and 92.2%. The atomic mass and abundance of...
Mathematics, 15.01.2021 01:00
History, 15.01.2021 01:00
Mathematics, 15.01.2021 01:00
Mathematics, 15.01.2021 01:00
Mathematics, 15.01.2021 01:00
History, 15.01.2021 01:00
Mathematics, 15.01.2021 01:00
Biology, 15.01.2021 01:00
History, 15.01.2021 01:00
Mathematics, 15.01.2021 01:00
Mathematics, 15.01.2021 01:00
Social Studies, 15.01.2021 01:00
Biology, 15.01.2021 01:00
Chemistry, 15.01.2021 01:00
English, 15.01.2021 01:00
Mathematics, 15.01.2021 01:00
Mathematics, 15.01.2021 01:00