Determine the arbitrary amounts of water

Question

Solve the following problem:

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 + CO₂ ? 2CO,

and  CO₂ + H₂ ? CO + H₂O

How many components are there if we start with:

(a) Arbitrary amounts of C, C0₂, and H₂?

(b) Arbitrary amounts of C, CO₂, H₂, C_O, and H₂0?