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A 12.0 mL sample of NaCl solution has a mass of 12.65g after the solution is...

A 12.0 mL sample of NaCl solution has a mass of 12.65g after the solution is evaporated to dryness, the dry residue has a mass of 4.25g. Calculate the concentration of the solution in m/m% m/v% and M
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Но |2.65 4..as 4.25 S8.45 12 6.06 M

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