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Asked Nov 21, 2019
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A solution is made using 200.0 mL of methanol (density 0.792 g/mL) and 300.0 mL of water (density 1.000 g/mL). What is the molality methanol in water? 

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Step 1

Mass of methanol is calculated as,

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Mass Volumex den sity 200x0.792 =158.4g

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Step 2

Molality is given by,

Molality = mole/mass Kg.

The molar mass of methanol is 32g.

Mass o...

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Mass of CH,OH Molarmass of CH,OH 1000g massof H,O _158.4 g 1000 32g 300g 16.4m II

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