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Mass of Urea NH$$_2$$CONH$$_2$$ required to be dissolved in 1000 g of water in order to reduce the vapour pressure of water by 25% is ______ g. (Nearest integer)
Given: Molar mass of N, C, O and H are 14, 12, 16 and 1 g mol$$^{-1}$$ respectively.
Correct Answer: 1111
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