12. Which of the following shows correctly an lon pair and the correct formula for the lonic compound the two lons form? A) Cu 1+, 02-; Cuo
B) sn4+, N3 -; Sn4N3
C) Cr3+, 1 "; CrI
D) Fe 3+, 02 -; Fe2O3

Given that the molar mass of nano3  is 85.00  g/mol, what mass of nano3  is needed to make 4.50  l of a 1.50  m nano3solution? use  .6.75 g18.9 g255 g574 g

Ill give brainiestif one neutron initiates a fission event that produces two neutrons in the products, how many new reactions can now be initiated? if each of the neutrons produced in the first fission event then initiates a fission event that produces one neutron in the products, how many new reactions can now be initiated by each neutron? how many neutrons in total were produced by the two fission events described?

No copying 15 pts how does a free-body diagram tell you about the net force on an object?