All you would have to do is sum them up cause their going the same direction.
A chemoorganotroph and a chemolithotroph in the same environment would not compete for - carbon
A chemoorganotroph is an organism that gets its energy from oxidation of reduced organic compounds. A chemolithotroph is someone who is able to use inorganic reduced compounds as a source of their energy. This process is accomplished through oxidation and ATP synthesis.
Enzymes can be best described as catalysts in living systems. This is because enzymes accelerate chemical reactions without being used up in the process.