Calculate the reaction quotient, Q, for the following cell reactions, given the measured values of the cell potential. Balance the chemical equations by using the smallest whole-number coefficients.

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(a) Ag(s) Ag+ (aq)||CIO4(aq),H+ (aq), CIO, (aq) |Pt(s), Ecell = +0.40 V. (b) C(gr) Cl₂(g) Cl¯(aq)||Au³+ (aq)| Au(s), Ecell = 0.00 V.