Word Count : 196

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Let the initial number of moles of (A) be (1) mole. The dissociation reaction is: [ A(g) \rightleftharpoons B(g) + C(g) ] Degree of dissociation, (\alpha = 20% = 0.2). Step 1: Express moles at equilibrium * Moles of (A) left: (n_A = 1 - \alpha = 1 - ______ _______ ______ ______ ______ ______ ____ _________.
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