Answer:
CheckedStep-by-step explanation:
The balanced equation is :-
C + 2H2----> CH4
According to the stoichiometry of the reaction :-
2 moles of H2 reacts with 1 mole of Carbon
1 mole of H2 reacts with 1/2 moles of Carbon
4.5 moles of H2 reacts with (1/2)× 4.5
= 2.25 moles of Carbon