Question

A substance used to increase the efficiency of a catalyst is called____
plzzz tell
Tomorrow is my paper....​

Answer 1

distillation

Explanation:

because this is a sub

Answer 2

Answer:

PROMOTERS improve the efficiency of a catalyst.

eg- molybdenum acts as a promoter to increase the efficiency of the catalyst iron,in the formation of ammonia gas from hydrogen and nitrogen

* promoters cannot work with out catalyst