At 700 K, 0.200 mol of N2(g) and 0.600 mol of H2(g) are introduced into a 1.00 L reaction vessel. When equilibrium is reached for the reaction N2(g)+3H2(g)⇌2NH3(g), analyses show that 0.100 mol of NH3 is present. What is the value of Kc at 700 K?
a) 1.5×10−1
b) 2.3×10−1
c) 7.3×10−1
d) 1.8×10−1