Answers: 2
Chemistry, 22.06.2019 00:00
Which of the following statements is true? a. elements in the last period are radioactive. b. atomic weight is the same as atomic mass. c. elements in the same group have the same number of electron shells. d. atomic number equals the number of neutrons in the nucleus of an atom.
Answers: 1
Chemistry, 22.06.2019 05:30
Choose all the answers that apply. as ocean depth increases, temperature decreases temperature increases pressure increases pressure decreases salinity increases density increases
Answers: 2
Chemistry, 22.06.2019 08:30
Identify one disadvantage to each of the following models of electron configuration: -dot structures -arrow and line diagrams -written electron configurations type in your answer below. (answer) -dot structures do not show the distribution of electrons in orbitals and take up a lot of space. -arrow and line diagrams take up a lot of space and make it difficult to count electrons. -written configurations make it easy to lose count of electrons and do not show the distribution of electrons in orbitals.
Answers: 3
Chemistry, 22.06.2019 10:00
Americium-241 undergoes fission to produce three neutrons per fission event. if a neutron-absorbing material is mixed in with this sample so that the rate of neutron production drops down to 1.8 neutrons per fission event, which will be effective at achieving a critical mass? check all that apply. remove a deflective shield surrounding the sample. remove absorbent material mixed in with the sample. compress the sample of americium-241.
Answers: 1
Given the following electronic configurations, identify how many valence electrons each atom has.
Mathematics, 18.12.2019 03:31
History, 18.12.2019 03:31
Mathematics, 18.12.2019 03:31
Mathematics, 18.12.2019 03:31
Mathematics, 18.12.2019 03:31
History, 18.12.2019 03:31
History, 18.12.2019 03:31
Mathematics, 18.12.2019 03:31
History, 18.12.2019 03:31
Mathematics, 18.12.2019 03:31
Mathematics, 18.12.2019 03:31
History, 18.12.2019 03:31