Vikkje2nnyaudiellei
Answered

Which term best describes the role of hydrogen gas in the formation of a water molecule?

catalyst

inhibitor

product

reactant

Verified Answer :

MissPhiladelphia

I believe the correct answer from the choices listed above is the last option. The term that would best describe the role of hydrogen gas in the formation of a water molecule would be a reactant. Water has a formula of H2O where it contains water so it should be  that hydrogen is a reactant. 

D is correct...................................

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