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Using Solution Molality

Using Solution Molality. By Gabriel Hannawi. How many grams of potassium iodide must be dissolved in 500.0g of water to produce a 0.060 molal KI solution?. Known: Mass of water-500.0g Solution concentration-0.060m Molar mass KI-166.0g/mol Unknown: Mass of solute- xg KI.

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Using Solution Molality

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  1. Using Solution Molality By Gabriel Hannawi

  2. How many grams of potassium iodide must be dissolved in 500.0g of water to produce a 0.060 molal KI solution? Known: • Mass of water-500.0g • Solution concentration-0.060m • Molar mass KI-166.0g/mol Unknown: • Mass of solute-xg KI

  3. Known:Mass of water-500.0gSolution concentration-0.060mMolar mass KI-166.0g/molUnknown:Mass of solute-xg KI gKI=.5 kg H20x(0.060 mol KI/1.0kg H20)x(166.0g KI/1 mol KI)=5.0 g KI Molality=moles of solute/kilograms of solvent

  4. Practice Problems • How many grams of sodium fluoride are needed to prepare 0.4m NaF solution that contains 750 g of water? • Calculate the molality of a solution prepared by dissolving 10.0g NaCl in 600g of water.

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