Use the periodic table to determine the electron configuration for Br and Y in noble-gas notation. Br:

[He]2s22p63s23p5

[Ne]3s23p4

[Ar]4s24p5

[Ne]3s23p5

Which of the following is not a good technique for managing used oil? a) have specific, labeled catch pans available for technicians who are collecting oil b) spills in your shop and any releases on pavement or outside should be poured down a drain c) do not use oil containers for antifreeze or other non-similar fluids d) be prepared for oil spills with the proper absorbents

If the density of water is 1.0 g/cm3, which of these materials would float in water, based on their densities? check all that apply. aluminum cork iron lead wax

How many atoms are there in 5.70 mol of mg