in the formation of silicon carbide represented by the chemical equation SiO2+3C-->SiC+2CO,8.0 mole of each reactant are available for the reaction. What substance is the limiting reactant?

The limiting reactant : C

Limiting reactant : the smaller ratio from mol and their reaction coefficient

Reaction

SiO₂+3C⇒SiC+2CO

Reactants : SiO₂ and C

mol ratio

the positions which points up in upward carbon and down in downward carbon are axial

and vice versa holds true for equatorial positions

so the correct answer with labelled diagram will be

i think its 5049.

i hope this !