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What volume of hydrochloric acid solution of 0.25 M must be diluted to prepare 1.00 L of 0.040 M HCl?

A 3.0-L flask contains 1.0 mol NOCl, 2.4 mol of Cl₂ and 4.5 x 10^-3 mol of NO At a particular temperature,. Calculate Keq at this temperature for the given reaction 2 NOCl (g) W 2 NO (g) + Cl₂ (g) ( reaction is at equilibrium):

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