Molality (in $m$ ) of a solution in which $36 g$ glucose is dissolved in $500 g$ water is.

0.8

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0.4

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0.2

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0.36

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Solution

The correct option is B 0.4
From molality formula, we know that
Molality $= \frac{M o l e s o f s o l u t e}{M a s s o f s o l v e n t (k g)}$
Solute is glucose, whose molecular mass is 180.
$∴ M = \frac{(36 \times 1000)}{180 \times 500} = 0.4 m o l / L$

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Calculate Molality (in $M$ ) of a solution in which 36 gm glucose is dissolved in 500 gm water.

Calculate Molality of a solution in which 36 gm glucose is dissolved in 500 gm water.

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