Chemistry - Chemical Equilibrium - ICE tables and equilibrium calculations - ICE Table Problems

4 ICE table calculations. Q1: 'A ⇌ 2B, Kc=4. [A]₀=1.0M, [B]₀=0. At equilibrium: [A]=1-x, [B]=2x. Kc = (2x)²/(1-x) = 4. Solve: 4x² + 4x - 4 = 0. x = ___' (0.618). Q2: 'From Q1: [A]eq = ___, [B]eq = ___' (0.382, 1.236). Q3: 'N₂O₄ ⇌ 2NO₂, Kc=0.36. Starting with [N₂O₄]=0.5M. ICE gives: 0.36 = 4x²/(0.5-x