Molality (in m) of a solution in which 36g glucose is dissolved in 500g water is.
A
0.8
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B
0.4
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C
0.2
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D
0.36
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Solution
The correct option is B 0.4 From molality formula, we know that Molality =MolesofsoluteMassofsolvent(kg) Solute is glucose, whose molecular mass is 180. ∴M=(36×1000)180×500=0.4mol/L