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Mass of Urea (NH2CONH2) required to be d...

Mass of Urea `(NH_2CONH_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

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