Answer :
The answer is (4) 4.0 mol. This is a stoichiometry problem. You start with 2.0 mol of C2H6 and obtain the moles of C by multiplying 2.0 by the mole ratio, in this case 2. 2.0*2=4.0mol.
Answer: The correct answer is option 4.
Explanation:
[tex]2C+3H_2\rightarrow C_2H_6[/tex]
According to the reaction, 1 mol of [tex]C_2H_6[/tex] is obtained from 2 moles of C gives
Then, 2 moles of [tex]C_2H_6[/tex] will be obtained from:
[tex]\frac{2}{1}\times 2[/tex] moles of C =4 moles
Hence, the correct answer is option 4.