The rate of the following reaction in aqueous solution is monitored by measuring the number of moles of Hg2Cl that precipitate per liter per minute. The data obtained are listed in the table. Determine the (a) rate law and (b) rate constant    (use the data for Experiment 3)   2 HgCI₂(aq) + C₂O₄-(aq) ->  2CI-(aq) + 2CO₂(g) + Hg₂Cl₂(s)   Experiment 1 2 3   [H gC12](M) 0.204 0.204 0.408   [C204](M) 0.091 0.180 0.180   Initial Rate (M/s) 1.1 x10^-4 2.2x10^-4 4.4x10^-4

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