Silver Chromate - Ag2CrO4

a.System
b.Surroundings

a. System: The silver chromate (Ag2CrO4) is the system in this case. It refers to the specific substance or chemicals that are being studied or analyzed.

b. Surroundings: The surroundings refer to everything outside of the system. In this case, the surroundings would include the environment in which the silver chromate is present, such as the air, any other substances or chemicals present nearby, and the container in which it is placed.