2 kg of water at (80^{circ} mathrm{C}) is mixed adiabatically with (3 mathrm{~kg}) of water at (30^{circ}

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2 kg of water at \(80^{\circ} \mathrm{C}\) is mixed adiabatically with \(3 \mathrm{~kg}\) of water at \(30^{\circ} \mathrm{C}\) in a constant pressure process of 1 atmosphere. Find the increase in entropy of the total mass of water due to the mixing process. The \(c_{p}\) of water \(=4.187 \mathrm{~kJ} / \mathrm{kg} . \mathrm{K}\).

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