Which materials conduct heat most easily

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

What is a possible quantum number set for an electron in the 3s orbital of a magnesium atom

What is the energy in joules of a mole of photons associated with visible light of wavelength 486 nm?