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प्रश्न
A10% aqueous solution of cane sugar (mol. wt. 342) is isotonic with 1.754% aqueous solution of urea. Find the molecular mass of urea.
उत्तर
10% aqueous solution of cane sugar is isotonic with 1.754% aqueous solution of urea (MB)
`(10 xx 1000)/(100 xx 342) = (1.754 xx 1000)/(100 xx "M"_"B")`
`"M"_"B"= (1.754 xx 1000)/(100) = (100 xx 342)/(10 xx 1000)`
= `1.754 xx 34.2`
`"M"_"B"= 59.99` amu
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