Entropy Thermodynamics

N##_2## (g) + 3 H##_2## (g) ##\leftrightharpoons## 2 NH##_3## (g)
For the reaction above, what is the sign and value of entropy for the reaction, given:
H##_2## (g), S##^\circ##(at 25##^\circ##C) = 130.7 J/(mol*K)
N##_2## (g), S##^\circ##(at 25##^\circ##C) = 191.56 J/(mol*K)
NH##_3## (g), S##^\circ##(at 25##^\circ##C) = 192.77 J/(mol*K)