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06-06-2023
Chemistry

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A water sample at \( 25^{\circ} \mathrm{C} \) presents a hardness of \( 30^{\circ} \mathrm{F} \), a Langelier index of \( -0.30 \), a Ryznar index of \( 7.9 \) and a calcium concentration of \( 80 \ma

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