Why did all sodium compounds show the same colour in the flame

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

Which of the following is a physical property flammability heat of combustion solubility and toxicity

The appropriate concentration for an iodine sanitizer is