With chemistry ? ? i don’t understand

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

Answer asap need it by wednesday morning calculate the ph of 0.02m hcl best answer will be brainliest

Determine type of reaction & predict the product c3h12+o2 =