Answer:
C. the use of hydrogen gas as an electron donor.
Explanation:
Hydrogenotrophy is the convertion of hydrogen gas to other compounds as part of its metabolism.
Answer:
mass is a measure of the amount of matter in a sample or object. It is measured in grammes or kilogrammes
Chemicals are never classified all depends upon it's physical and chemical properties so the answer is FALSE
The calculated molar volume would decrease as CO2 would escape
