Answer asap !

2a(g) + b2(g) ⇌ 2ab(g)

the equilibrium constant for the chemical reaction is found to be 100 at 150 k.

if the concentration of a is 2.0 ×10-2 m and the concentration of b2 is 1.0 ×10-2 m, what is the concentration of the ab gas?

2.0 × 10-3 m
1.0 × 10-2 m
1.0 × 10-1 m
2.0 × 10-2 m