Which of the following best defines over-the-counter medications?
a. medications that require a written order from a doctor
b. drugs that can be purchased at a store without a prescription
c. drugs that can be taken for mind-altering effects that have no medical purpose
d. substances that cause a change in a person's physical or psychological state

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

Why is the structure of molecule important to its function?

If you add 5.00 ml of 0.100 m sodium hydroxide to 50.0 ml of acetate buffer that is 0.100 m in both acetic acid and sodium acetate, what is the ph of the resulting solution? acetic acid: ka = 1.8. x 10-5