If the Change in Entropy of CO₂ Is 16 $\mathrm { J } / ( \mathrm { mol } \cdot \mathrm { K } )$

If the change in entropy of CO₂ is 16.8 $\mathrm { J } / ( \mathrm { mol } \cdot \mathrm { K } )$ and its temperature changes from 298 K to 318 K, how many moles of CO₂ are present? Given: C_p of CO₂ = 36.94 $\mathrm { J } / ( \mathrm { mol } \cdot \mathrm { K } )$ .

A) 2 moles
B) 3 moles
C) 5 moles
D) 7 moles
E) 10 moles