Consider the reaction 2A (g) + B (g) 0-= C (g). Equal numbers of moles of B and C are added together in a sealed contain

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Consider the reaction 2A (g) + B (g) 0-= C (g). Equal numbers of
moles of B and C are added together in a sealed container with no A
present at the start. When equilbrium is established it is always
true that that
1) [A]= 2) =[C] 3)
[A]>[C] 4) >[C] 5) [A]=[C]
6)[A]>[C] 7) None of the above.
Please provide a detail explaination so I can understand the
theory behind the answer