When would scientists need to change a theory?

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

How many moles of al3+ ions are in 1.25 moles of al2o3

All motion is caused by force? true or false