At 2000° C, the equilibrium constant for the reaction 2NO(g) leftharpoons N₂(g) + O₂(g) is Kc = 2.4 × 10³. If the initial concentration of NO is 0.175 , M, what is the equilibrium concentration of NO?
a) 0.105 , M
b) 0.175 , M
c) 0.210 , M
d) 0.350 , M
