How many components are there in a system composed of

Question

1. How many components are there in a system composed of arbitrary amounts of water, sodium chloride, and barium chloride?

2. At high temperature, the following reactions take place:

C + CO22CO

and CO2 + H2 CO + H2O

How many components are there if we start with:
(a) Arbitrary amounts of C, CO₂, and H₂?

(b) Arbitrary amounts of C, CO₂, H₂, CO, and H₂O?