PLEASE HELP ASAP I WILL GIVE BRAINLIEST! Which statement describes a catalyst?
A) catalysts appear as reactants in a chemical equation.
B) catalysts are completely consumed by the reaction.
C) catalysts provide a lower energy pathway for the reaction.
D) catalysts speed up chemical reaction by increasing surface area.

Harvey kept a balloon with a volume of 348 milliliters at 25.0˚c inside a freezer for a night.  when he took it out, its new volume was 322 milliliters, but its pressure was the same.  if the final temperature of the balloon is the same as the freezer’s, what is the temperature of the freezer? the temperature of the freezer is  kelvins.

Drug abuse will not lead to physical and psychological dependence. true or false ?

Asolid that forms and separates from a liquid mixture is called